Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Nehalem (microarchitecture)
open-in-new
<h2 id="technology">Technology</h2> <ul><li>Cache line block on L2/L3 cache was reduced from 128 bytes in NetBurst & Merom/Penryn to 64 bytes per line in this generation (same size as Yonah and Pentium M).</li> <li><a href="/facts/Hyper-threading/hjqGgK8V">Hyper-threading</a> reintroduced.</li> <li>Intel <a href="/facts/Turbo_Boost/W9I2PUcg">Turbo Boost</a> 1.0.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a></li> <li>2–24 MiB <a href="/facts/CPU_Cache/x8BYFcdv">L3 cache</a> with <a href="/facts/Smart_Cache/x8BYFcdv">Smart Cache</a> in some models.</li> <li><a href="/facts/Instruction_Fetch_Unit/g9A4MCUT">Instruction Fetch Unit</a> (IFU) containing second-level <a href="/facts/Branch_predictor/pGPhFMj5">branch predictor</a> with two level <a href="/facts/Branch_Target_Buffer/ImoX6k7L">Branch Target Buffer</a> (BTB) and Return Stack Buffer (RSB). Nehalem also supports all predictor types previously used in Intel's processors like Indirect Predictor and Loop Detector.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a></li> <li>sTLB (second level unified <a href="/facts/Translation_lookaside_buffer/vvwGkfvD">translation lookaside buffer</a>) (i.e. both instructions and data) that contains 512 entries for small pages only, and is again 4 way associative.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a></li> <li>3 integer ALU, 2 vector ALU and 2 AGU per core.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a></li> <li>Native (all processor cores on a single die) quad- , hex-, and octa-core processors</li> <li><a href="/facts/Intel_QuickPath_Interconnect/BUfedB2U">Intel QuickPath Interconnect</a> in HEDT, server, and workstation models and <a href="/facts/Direct_Media_Interface/ylK0cfmm">Direct Media Interface</a> on other models replacing the legacy <a href="/facts/Front_side_bus/LgYSB7Wl">front side bus</a>.</li> <li>64 KB L1 cache per core (32 KB L1 data and 32 KB L1 instruction), and 256 KB L2 cache per core.</li> <li>Integration of <a href="/facts/PCI_Express/ADhsLCUK">PCI Express</a> and <a href="/facts/Direct_Media_Interface/ylK0cfmm">DMI</a> into the processor in mid-range models, replacing the <a href="/facts/Northbridge_(computing)/XFbfH4Kl">northbridge</a>.</li> <li>Integrated <a href="/facts/Memory_controller/tHq2zlws">memory controller</a> supporting two or three memory channels of <a href="/facts/DDR3_SDRAM/1R1CTNv3">DDR3 SDRAM</a> or four <a href="/facts/Fully_Buffered_DIMM/vYT34qfa">FB-DIMM2</a> channels.</li> <li>Second-generation Intel Virtualization Technology, which introduced <a href="/facts/Extended_Page_Table/WY0j2dRv">Extended Page Table</a> support, virtual processor identifiers (VPIDs), and <a href="/facts/Non-maskable_interrupt/f7CWJU1B">non-maskable interrupt</a>-window exiting. <a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a></li> <li><a href="/facts/SSE4.2/Tnxrl7Ph">SSE4.2</a> and POPCNT instructions.</li> <li><a href="/facts/Macro-op_fusion/9naSl6e9">Macro-op fusion</a> now works in 64-bit mode.</li> <li>20 to 24 pipeline stages.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a></li></ul> <a href="/facts/Translation_lookaside_buffer/vvwGkfvD">Translation lookaside buffer</a> sizes<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a><table><tbody><tr><th colspan="2">Cache</th><th colspan="2">Page Size</th></tr><tr><th>Name</th><th>Level</th><th>4 KB</th><th>2 MB</th></tr><tr><td>DTLB</td><td>1st</td><td>64</td><td>32</td></tr><tr><td>ITLB</td><td>1st</td><td>128</td><td>7 / logical core</td></tr><tr><td>STLB</td><td>2nd</td><td>512</td><td>none</td></tr></tbody></table> <h2 id="performance-and-power-improvements">Performance and power improvements</h2> <p>It has been reported that Nehalem has a focus on performance, thus the increased core size.<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a> Compared to Penryn, Nehalem has: </p> <ul><li>10–25% better single-threaded performance / 20–100% better <a href="/facts/Thread_(computer_science)/hh8WHyPd">multithreaded</a> performance at the same power level</li> <li>30% lower <a href="/facts/Energy_conversion_efficiency/gSqXlWoI">power consumption</a> for the same <a href="/facts/Computer_performance/td1qKox4">performance</a></li> <li>On average, Nehalem provides a 15–20% clock-for-clock increase in performance per core.</li></ul> <p>Overclocking is possible with Bloomfield processors and the <a href="/facts/Intel_X58/bnFbkh1n">X58</a> chipset. <a href="/facts/Lynnfield_(microprocessor)/rEVtS1Ic">Lynnfield</a> processors use a <a href="/facts/Platform_Controller_Hub/6SyP8Vmj">PCH</a> removing the need for a northbridge.<a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> </p><p>Nehalem processors incorporate <a href="/facts/SSE4/Tnxrl7Ph">SSE4.2</a> <a href="/facts/SIMD/gQHWQSpo">SIMD</a> instructions, adding seven new instructions to the SSE 4.1 set in the Core 2 series. The Nehalem architecture reduces atomic operation latency by 50% in an attempt to eliminate overhead on atomic operations such as the LOCK CMPXCHG <a href="/facts/Compare-and-swap/7mJkkycd">compare-and-swap</a> instruction.<a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a> </p> <h2 id="variants">Variants</h2> <table><tbody><tr><th>Processing Cores (interface)</th><th>Process</th><th>Die Size</th><th>million transistors</th><th>CPUID</th><th>Model</th><th>Stepping</th><th>Mobile</th><th>Desktop, UP Server</th><th>DP Server</th><th>MP Server</th></tr><tr><td>Eight-Core (Quad-Channel)</td><td rowspan="4">45 nm</td><td>684 mm2</td><td>2.300<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a></td><td>206E6</td><td>46</td><td>D0</td><td></td><td></td><td></td><td><a href="/facts/Beckton_(microprocessor)/j1M8Hp6D">Beckton</a> (80604)</td></tr><tr><td>Quad-Core (Triple-Channel)</td><td>263 mm2</td><td>731</td><td>106A4106A5</td><td>26</td><td>C0/C1D0</td><td></td><td><a href="/facts/Bloomfield_(microprocessor)/QJzB410e">Bloomfield</a> (80601)</td><td><a href="/facts/Gainestown_(microprocessor)/j1M8Hp6D">Gainestown</a> (80602)</td><td></td></tr><tr><td>Quad-Core (Dual-Channel, PCIe)</td><td>296 mm2</td><td>774</td><td>106E4106E5</td><td>30</td><td>B0B1</td><td><a href="/facts/Clarksfield_(microprocessor)/Vdl0t0Jz">Clarksfield</a> (80607)</td><td><a href="/facts/Lynnfield_(microprocessor)/rEVtS1Ic">Lynnfield</a> (80605)</td><td><a href="/facts/Jasper_Forest_(microprocessor)/j1M8Hp6D">Jasper Forest</a> (80612)</td><td></td></tr><tr><td>Dual-Core (Dual-Channel, PCIe, Graphics Core)</td><td></td><td>?</td><td></td><td></td><td></td><td>Auburndale (80608) <i>(canceled)</i></td><td>Havendale (80606) <i>(canceled)</i></td><td></td><td></td></tr></tbody></table> <ul><li>Lynnfield processors feature 16 <a href="/facts/PCI_Express/ADhsLCUK">PCIe</a> lanes, which can be used in 1x16 or 2x8 configuration.</li> <li>1 6500 series scalable up to 2 sockets, 7500 series scalable up to 4/8 sockets.<a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a></li></ul> <h3>Server, workstation, and desktop processors</h3> <p class="note">Main articles: <a href="/facts/List_of_Intel_Core_processors/HjAQeDRJ">List of Intel Core processors</a> and <a href="/facts/List_of_Intel_Xeon_processors_(Nehalem-based)/dNIkR6Qh">List of Intel Xeon processors (Nehalem-based)</a></p> <table><tbody><tr><th rowspan="2">Codename</th><th rowspan="2">Market</th><th rowspan="2"><a href="/facts/Multi-core/ABNb65hQ">Cores</a>(threads)</th><th rowspan="2"><a href="/facts/CPU_socket/ndWcsnq6">Socket</a></th><th colspan="2" rowspan="2">ProcessorBranding & Model</th><th rowspan="2">CPU<a href="/facts/Clock_rate/w055Woaj">Clock rate</a></th><th rowspan="2"><a href="/facts/Turbo_Boost/W9I2PUcg">Turbo</a></th><th rowspan="2"><a href="/facts/Thermal_Design_Power/Idcy26tM">TDP</a></th><th colspan="2">Interfaces</th><th rowspan="2"><a href="/facts/CPU_cache/x8BYFcdv">L3cache</a></th><th rowspan="2">Release Date</th><th rowspan="2">Price</th></tr><tr><th>Chipset</th><th>Memory</th></tr><tr><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th><th></th></tr><tr><td rowspan="11"><i>Beckton</i>1</td><td rowspan="11">MP Server /DP Server</td><td rowspan="4">8 (16)</td><td rowspan="11"><a href="/facts/LGA_1567/SEpFWW02">LGA1567</a></td><td rowspan="11">Xeon<p>7000<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a></p></td><td>X7560</td><td>2.26 GHz</td><td rowspan="9">Yes</td><td rowspan="3">130 <a href="/facts/Watt/VK8oqRrm">W</a></td><td rowspan="3">4× <a href="/facts/Intel_QuickPath_Interconnect/BUfedB2U">QPI</a> 6.4 <a href="/facts/Transfer_(computing)/fgBCc5U9">GT</a>/s</td><td rowspan="11">DDR3-800 /1066(Up to 4x withSMB-Readymotherboard)</td><td>24 <a href="/facts/Megabyte/RBF4XpWb">MB</a></td><td rowspan="11">2010-03-30<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a></td><td>$3692</td></tr><tr><td>X7550</td><td rowspan="2">2.0 GHz</td><td rowspan="2">18 MB</td><td>$2837</td></tr><tr><td>X6550</td><td>$2461</td></tr><tr><td>L7555</td><td>1.86 GHz</td><td>95 W</td><td>4× QPI 5.86 GT/s</td><td>24 MB</td><td>$3157</td></tr><tr><td rowspan="4">6 (12)</td><td>E7540</td><td rowspan="2">2.0 GHz</td><td rowspan="3">105 W</td><td rowspan="2">4× QPI 6.4 GT/s</td><td>18 MB</td><td>$1980</td></tr><tr><td>E6540</td><td rowspan="2">12 MB</td><td>$1712</td></tr><tr><td>E7530</td><td rowspan="2">1.86 GHz</td><td rowspan="3">4× QPI 5.86 GT/s</td><td>$1391</td></tr><tr><td>L7545</td><td>95 W</td><td rowspan="3">18 MB</td><td>$2087</td></tr><tr><td>6 (6)</td><td>X7542</td><td>2.66 GHz</td><td>130 W</td><td>$1980</td></tr><tr><td rowspan="2">4 (8)</td><td>E7520</td><td>1.86 GHz</td><td rowspan="2">No</td><td rowspan="2">105 W</td><td rowspan="2">4× QPI 4.8 GT/s</td><td>$856</td></tr><tr><td>E6510</td><td>1.73 GHz</td><td>12 MB</td><td>$744</td></tr><tr><td rowspan="18"><i>Gainestown</i></td><td rowspan="23">DP Server<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a></td><td rowspan="11">4 (8)</td><td rowspan="35"><a href="/facts/LGA_1366/8k078HcP">LGA1366</a></td><td rowspan="23"><a href="/facts/Gainestown_(microprocessor)/j1M8Hp6D">Xeon</a><p>5000<a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a></p></td><td>W5590</td><td>3.33 <a href="/facts/Hertz/6Wshj5qm">GHz</a></td><td rowspan="11">Yes</td><td rowspan="2">130 W</td><td rowspan="5">2× QPI 6.4 GT/s</td><td rowspan="5">3× <a href="/facts/DDR3_SDRAM/1R1CTNv3">DDR3</a>-13331</td><td rowspan="11">8 MB</td><td>2009-08-09</td><td>$1600</td></tr><tr><td>W5580</td><td>3.2 GHz</td><td rowspan="7">2009-03-29<a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a></td><td>$1500</td></tr><tr><td>X5570</td><td>2.93 GHz</td><td rowspan="3">95 W</td><td>$1286</td></tr><tr><td>X5560</td><td>2.8 GHz</td><td>$1072</td></tr><tr><td>X5550</td><td>2.66 GHz</td><td>$858</td></tr><tr><td>E5540</td><td>2.53 GHz</td><td rowspan="3">80 W</td><td rowspan="6">2× 5.86 GT/s</td><td rowspan="6">3× DDR3-10661</td><td>$744</td></tr><tr><td>E5530</td><td>2.4 GHz</td><td>$530</td></tr><tr><td>E5520</td><td>2.26 GHz</td><td>$373</td></tr><tr><td>L5530</td><td>2.4 GHz</td><td rowspan="3">60 W</td><td>2009-08-09</td><td>$744</td></tr><tr><td>L5520</td><td>2.26 GHz</td><td rowspan="2">2009-03-30</td><td>$530</td></tr><tr><td>L5518</td><td>2.13 GHz</td><td>$</td></tr><tr><td rowspan="4">4 (4)</td><td>E5507</td><td>2.26 GHz</td><td rowspan="4">No</td><td rowspan="2">80 W</td><td rowspan="4">2× 4.8 GT/s</td><td rowspan="4">3× DDR3-8001</td><td rowspan="4">4 MB</td><td>2010-03-16</td><td rowspan="2">$266</td></tr><tr><td>E5506</td><td>2.13 GHz</td><td rowspan="4">2009-03-29</td></tr><tr><td>L5506</td><td>2.13 GHz</td><td>60 W</td><td>$423</td></tr><tr><td>E5504</td><td>2.0 GHz</td><td>80 W</td><td>$224</td></tr><tr><td>2 (4)</td><td>L5508</td><td>2.0 GHz</td><td>Yes</td><td>38 W</td><td>2× 5.86 GT/s</td><td>3× DDR3-1066</td><td>8 MB</td><td>$</td></tr><tr><td rowspan="2">2 (2)</td><td>E5503</td><td>2.0 GHz</td><td rowspan="2">No</td><td rowspan="2">80 W</td><td rowspan="2">2× 4.8 GT/s</td><td rowspan="2">3× DDR3-800</td><td rowspan="2">4 MB</td><td>2010-03-16</td><td>$224</td></tr><tr><td>E5502</td><td>1.86 GHz</td><td>2009-03-29</td><td>$188</td></tr><tr><td rowspan="5"><i>Jasper</i><p><i>Forest</i></p></td><td rowspan="3">4 (8)</td><td>EC5549</td><td>2.53 GHz</td><td rowspan="3">Yes</td><td>85 W</td><td>1× 5.86 GT/s</td><td>3× DDR3-1333</td><td rowspan="4">8 MB</td><td rowspan="5">2010-02-11</td><td>$530</td></tr><tr><td>LC5528</td><td>2.13 GHz</td><td>60 W</td><td rowspan="3">1× 4.8 GT/s</td><td rowspan="3">3× DDR3-1066</td><td rowspan="2">$519</td></tr><tr><td>LC5518</td><td>1.73 GHz</td><td>48 W</td></tr><tr><td>4 (4)</td><td>EC5509</td><td>2 GHz</td><td rowspan="2">No</td><td>85 W</td><td>$265</td></tr><tr><td>2 (4)</td><td>EC5539</td><td>2.27 GHz</td><td>65 W</td><td>1× 5.86 GT/s</td><td>3× DDR3-1333</td><td>4 MB</td><td>$387</td></tr><tr><td rowspan="9"><i>Bloomfield</i></td><td rowspan="19">UP Server<a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a></td><td rowspan="7">4 (8)</td><td rowspan="19">Xeon<p>3000<a class="footnote-ref" id="fnref:24" href="#fn:24"><sup>24</sup></a></p></td><td>W3580</td><td>3.33 GHz</td><td rowspan="7">Yes</td><td rowspan="9">130 W</td><td rowspan="2">1× QPI 6.4 GT/s</td><td rowspan="2">3× DDR3-1333</td><td rowspan="7">8 MB</td><td>2009-08-09</td><td rowspan="2">$999</td></tr><tr><td>W3570</td><td>3.2 GHz</td><td>2009-03-29<a class="footnote-ref" id="fnref:25" href="#fn:25"><sup>25</sup></a></td></tr><tr><td>W3565</td><td>3.2 GHz</td><td rowspan="7">1× QPI 4.8 GT/s</td><td rowspan="8">3× DDR3-1066</td><td>2009-11-01</td><td rowspan="3">$562</td></tr><tr><td>W3550</td><td>3.06 GHz</td><td>2009-08-09</td></tr><tr><td>W3540</td><td>2.93 GHz</td><td>2009-03-29<a class="footnote-ref" id="fnref:26" href="#fn:26"><sup>26</sup></a></td></tr><tr><td>W3530</td><td>2.8 GHz</td><td>2010-03-16</td><td>$294</td></tr><tr><td>W3520</td><td>2.66 GHz</td><td rowspan="3">2009-03-29<a class="footnote-ref" id="fnref:27" href="#fn:27"><sup>27</sup></a></td><td>$284</td></tr><tr><td rowspan="2">2 (2)</td><td>W3505</td><td>2.53 GHz</td><td rowspan="3">No</td><td rowspan="2">4 MB</td><td>$</td></tr><tr><td>W3503</td><td>2.4 GHz</td><td>$</td></tr><tr><td rowspan="3"><i>Jasper</i><p><i>Forest</i></p></td><td>4 (4)</td><td>EC3539</td><td>2.13 GHz</td><td>65 W</td><td rowspan="3">DMI</td><td>8 MB</td><td rowspan="3">2010-02-11</td><td rowspan="2">$302</td></tr><tr><td>2 (4)</td><td>LC3528</td><td rowspan="2">1.73 GHz</td><td>Yes</td><td>35 W</td><td rowspan="2">3× DDR3-800</td><td>4 MB</td></tr><tr><td>1 (1)</td><td>LC3518</td><td>No</td><td>23 W</td><td>2 MB</td><td>$192</td></tr><tr><td rowspan="7"><i>Lynnfield</i></td><td rowspan="6">4 (8)</td><td rowspan="7"><a href="/facts/LGA_1156/9k3NLkz7">LGA1156</a></td><td>X3480</td><td>3.06 GHz</td><td rowspan="7">Yes</td><td rowspan="5">95 W</td><td rowspan="7">DMI</td><td rowspan="7">2× DDR3-1333</td><td rowspan="23">8 MB</td><td>2010-05-30</td><td>$612</td></tr><tr><td>X3470</td><td>2.93 GHz</td><td rowspan="6">2009-09-08</td><td>$589</td></tr><tr><td>X3460</td><td>2.8 GHz</td><td>$316</td></tr><tr><td>X3450</td><td>2.66 GHz</td><td>$241</td></tr><tr><td>X3440</td><td>2.53 GHz</td><td>$215</td></tr><tr><td>L3426</td><td>1.86 GHz</td><td>45 W</td><td>$284</td></tr><tr><td>4 (4)</td><td>X3430</td><td>2.4 GHz</td><td>95 W</td><td>$189</td></tr><tr><td rowspan="7"><i>Bloomfield</i></td><td rowspan="7">EnthusiastDesktop<a class="footnote-ref" id="fnref:28" href="#fn:28"><sup>28</sup></a></td><td rowspan="13">4 (8)</td><td rowspan="7">LGA1366</td><td rowspan="2"><a href="/facts/Intel_Core_i7/5qT6deUr">Core i7</a>Extreme</td><td>975X<a class="footnote-ref" id="fnref:29" href="#fn:29"><sup>29</sup></a></td><td>3.33 GHz</td><td rowspan="7">Yes</td><td rowspan="7">130 W</td><td rowspan="2">1× QPI 6.4 GT/s</td><td rowspan="7">3× DDR3-1066</td><td>2009-05-31</td><td rowspan="2">$999</td></tr><tr><td>965X</td><td>3.2 GHz</td><td>2008-11-17</td></tr><tr><td rowspan="11">Core i7</td><td>960<a class="footnote-ref" id="fnref:30" href="#fn:30"><sup>30</sup></a></td><td>3.2 GHz</td><td rowspan="5">1× QPI 4.8 GT/s</td><td>2009-10-20</td><td rowspan="3">$562</td></tr><tr><td>950<a class="footnote-ref" id="fnref:31" href="#fn:31"><sup>31</sup></a></td><td>3.06 GHz</td><td>2009-05-31</td></tr><tr><td>940</td><td>2.93 GHz</td><td>2008-11-17</td></tr><tr><td>930</td><td>2.8 GHz</td><td>2010-02-28</td><td>$294</td></tr><tr><td>920</td><td>2.66 GHz</td><td>2008-11-17</td><td>$284</td></tr><tr><td rowspan="9"><i>Lynnfield</i></td><td rowspan="9">PerformanceDesktop</td><td rowspan="9">LGA1156</td><td>880</td><td>3.06 GHz</td><td rowspan="9">Yes</td><td rowspan="3">95 W</td><td rowspan="10"><a href="/facts/Direct_Media_Interface/ylK0cfmm">DMI</a></td><td rowspan="9">2× DDR3-1333</td><td rowspan="2">2010-05-30</td><td>$583</td></tr><tr><td>875K</td><td rowspan="2">2.93 GHz</td><td>$342</td></tr><tr><td>870<a class="footnote-ref" id="fnref:32" href="#fn:32"><sup>32</sup></a></td><td>2009-09-08</td><td>$562</td></tr><tr><td>870S</td><td>2.66 GHz</td><td>82 W</td><td>2010-07-19</td><td>$351</td></tr><tr><td>860</td><td>2.8 GHz</td><td>95 W</td><td>2009-09-08</td><td>$284</td></tr><tr><td>860S</td><td>2.53 GHz</td><td>82 W</td><td>2010-01-07</td><td>$337</td></tr><tr><td rowspan="3">4 (4)</td><td rowspan="3">Core i5</td><td>760</td><td>2.8 GHz</td><td>95 W</td><td>2010-07-17</td><td>$209</td></tr><tr><td>750<a class="footnote-ref" id="fnref:33" href="#fn:33"><sup>33</sup></a></td><td>2.66 GHz</td><td>95 W</td><td>2009-09-08</td><td>$196</td></tr><tr><td>750S</td><td>2.4 GHz</td><td>82 W</td><td>2010-01-07</td><td>$259</td></tr><tr><td><i>Jasper</i><p><i>Forest</i></p></td><td>EmbeddedDesktop</td><td>1 (2)</td><td>LGA1366</td><td>Celeron</td><td>P1053</td><td>1.33 GHz</td><td>No</td><td>30 W</td><td>3× DDR3-800</td><td>2 MB</td><td>2010-12-02</td><td>$160</td></tr></tbody></table> <ul><li>Intel states the Gainestown processors have six memory channels. Gainestown processors have dual QPI links and have a separate set of memory registers for each link in effect, a multiplexed six-channel system.<a class="footnote-ref" id="fnref:34" href="#fn:34"><sup>34</sup></a><a class="footnote-ref" id="fnref:35" href="#fn:35"><sup>35</sup></a></li></ul> <h3>Mobile processors</h3> <p class="note">Main article: <a href="/facts/List_of_Intel_Core_i7_processors/5qT6deUr">List of Intel Core i7 processors</a></p> <table><tbody><tr><th>Codename</th><th>Market</th><th>Cores /Threads</th><th><a href="/facts/CPU_socket/ndWcsnq6">Socket</a></th><th colspan="2">ProcessorBranding & Model</th><th>Core<a href="/facts/Clock_rate/w055Woaj">Clock rate</a></th><th><a href="/facts/Turbo_Boost/W9I2PUcg">Turbo</a></th><th><a href="/facts/Thermal_Design_Power/Idcy26tM">TDP</a></th><th><a href="/facts/CPU_cache/x8BYFcdv">L3cache</a></th><th>Interface</th><th>Release Date</th><th>Price</th></tr><tr><td rowspan="6">Clarksfield</td><td rowspan="2">Extreme<p>mobile</p></td><td rowspan="6">4 (8)</td><td rowspan="6"><a href="/facts/Socket_G1/1PSenEsP">Socket G1</a><p>rPGA 988</p></td><td rowspan="2">Core i7Extreme</td><td>940XM</td><td>2.13 GHz</td><td rowspan="6">Yes</td><td rowspan="2">55 W</td><td rowspan="4">8 MB</td><td rowspan="6">* DMI* 2x DDR3-1333* <a href="/facts/PCI_Express/ADhsLCUK">PCIe</a> 1 x16 / 2 x8</td><td>2010-06-21</td><td>$1096</td></tr><tr><td>920XM</td><td>2.0 GHz</td><td>2009-09-23</td><td>$1054</td></tr><tr><td rowspan="4">Quad-core<p>mobilePerformandemobile</p></td><td rowspan="4">Core i7</td><td>840QM</td><td>1.86 GHz</td><td rowspan="4">45 W</td><td>2010-06-21</td><td>$568</td></tr><tr><td>820QM</td><td rowspan="2">1.73 GHz</td><td>2009-09-23</td><td>$546</td></tr><tr><td>740QM</td><td rowspan="2">6 MB</td><td>2010-06-21</td><td>$378</td></tr><tr><td>720QM</td><td>1.6 GHz</td><td>2009-09-23</td><td>$364</td></tr></tbody></table> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/List_of_Intel_CPU_microarchitectures/6uPXDvSD">List of Intel CPU microarchitectures</a></li> <li><a href="/facts/Tick%25E2%2580%2593tock_model/CeKPeLur">Tick–tock model</a></li></ul> <h2 id="further-reading">Further reading</h2> <ul><li><a href="http://www.infoworld.com/d/hardware/infoworld-review-intels-westmere-struts-its-stuff-588"><i>InfoWorld review: Intel's Westmere struts its stuff</i></a>, InfoWorld, March 16, 2010</li> <li><a href="https://web.archive.org/web/20110308113714/http://www.xbitlabs.com/articles/cpu/display/clarkdale-sneakpeek.html"><i>IDF: Intel Clarkdale Up Close and Personal</i></a>, X-bit Labs, September 24, 2009, archived from <a href="http://www.xbitlabs.com/articles/cpu/display/clarkdale-sneakpeek.html">the original</a> on March 8, 2011</li> <li><a href="https://web.archive.org/web/20090306120625/http://hothardware.com/articles/Intel-Core-i7-Processors-Nehalem-and-X58-Have-Arrived/"><i>Intel Core i7 Processors: Nehalem and X58 Have Arrived</i></a>, Hot Hardware, November 3, 2008, archived from <a href="https://hothardware.com/Articles/Intel-Core-i7-Processors-Nehalem-and-X58-Have-Arrived/">the original</a> on March 6, 2009, retrieved June 10, 2009</li> <li><a href="https://web.archive.org/web/20081106050718/http://www.hardcoreware.net/reviews/review-372-1.htm"><i>Intel Core i7 CPU & Nehalem Architecture Review</i></a>, hardCOREware.net, November 3, 2008, archived from <a href="http://www.hardcoreware.net/reviews/review-372-1.htm">the original</a> on November 6, 2008</li> <li><a href="https://web.archive.org/web/20081106095543/http://www.pcper.com/article.php?aid=634"><i>Intel Nehalem Core i7 Series Complete Review</i></a>, PC Perspective, November 3, 2008, archived from <a href="http://www.pcper.com/article.php?aid=634">the original</a> on November 6, 2008, retrieved November 3, 2008</li> <li><a href="http://xtreview.com/addcomment-id-6524-view-Intel-core-i-7-940-review.html"><i>Intel Nehalem Core i7 940 Review</i></a>, Xtreview, October 1, 2008</li> <li>Altavilla, Dave (March 17, 2008), <a href="https://web.archive.org/web/20120523001352/http://hothardware.com/Articles/Intel_Showcases_Dunnington_Nehalem_and_Larrabee_Processors/"><i>Intel Showcases Dunnington, Nehalem and Larrabee Processors</i></a>, HotHardware, archived from <a href="https://www.hothardware.com/Articles/Intel_Showcases_Dunnington_Nehalem_and_Larrabee_Processors/">the original</a> on May 23, 2012, retrieved March 26, 2008</li> <li>Shrout, Ryan (March 28, 2008), <a href="https://web.archive.org/web/20100514070725/http://www.pcper.com/article.php?aid=382&type=expert"><i>Intel Slides and Nehalem architecture information</i></a>, PC Perspective, archived from <a href="http://www.pcper.com/article.php?aid=382&type=expert">the original</a> on May 14, 2010, retrieved April 23, 2007</li> <li>Stokes, Jon (March 28, 2007), <a href="https://arstechnica.com/news.ars/post/20070328-intel-aims-nehalem-at-amds-fusion-integrated-graphics-on-die-memory-controller-smt.html"><i>Intel drops a Nehalem bomb on AMD's Fusion: integrated graphics, on-die memory controller, SMT</i></a>, Ars Technica</li> <li>Lal Shimpi, Anand (September 18, 2007), <a href="http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3101&p=2"><i>Nehalem: Single die, 8-cores, 731M transistors</i></a>, AnandTech</li> <li>Lal Shimpi, Anand (November 3, 2008), <a href="http://www.anandtech.com/show/2594/1"><i>Nehalem - Everything You Need to Know about Intel's New Architecture</i></a>, AnandTech</li> <li>David Kanter (April 4, 2010). <a href="http://www.realworldtech.com/page.cfm?ArticleID=RWT040208182719">"Inside Nehalem: Intel's Future Processor and System"</a>. realworldtech.com. Retrieved December 16, 2010.</li> <li>Holland, Maggie (September 19, 2007), <a href="https://web.archive.org/web/20071018210416/http://www.itpro.co.uk/news/125370/idf-2007-intel-debuts-nehalem.html"><i>IDF 2007: Intel debuts Nehalem</i></a>, IT Pro, archived from <a href="http://www.itpro.co.uk/news/125370/idf-2007-intel-debuts-nehalem.html">the original</a> on October 18, 2007</li> <li><a href="https://web.archive.org/web/20080705084208/http://www.chw.net/Articulos/Intel/Todo-lo-que-sabemos-de-Intel-Nehalem-200801051919.html"><i>Everything we know about Nehalem</i></a> (in Spanish), CHW.net, January 5, 2008, archived from <a href="http://www.chw.net/Articulos/Intel/Todo-lo-que-sabemos-de-Intel-Nehalem-200801051919.html">the original</a> on July 5, 2008</li> <li>Stokes, Jon (April 9, 2008), <a href="https://arstechnica.com/articles/paedia/cpu/what-you-need-to-know-about-nehalem.ars"><i>What you need to know about Intel's Nehalem CPU</i></a>, Ars Technica</li> <li>Torres, Gabriel (March 17, 2008), <a href="https://web.archive.org/web/20080516232401/http://www.hardwaresecrets.com/article/535"><i>Details on the Forthcoming Intel Nehalem Processor</i></a>, Hardware Secrets, archived from <a href="http://www.hardwaresecrets.com/article/535">the original</a> on May 16, 2008</li> <li>Shimpi, Anand Lal (June 5, 2008), <a href="http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3326"><i>The Nehalem Preview: Intel Does It Again</i></a>, AnandTech</li> <li>Shimpi, Anand Lal (August 21, 2008), <a href="http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3382"><i>Nehalem – Everything You Need to Know about Intel's New Architecture</i></a>, AnandTech</li> <li><a href="https://web.archive.org/web/20081106102523/http://xbitlabs.com/articles/cpu/display/nehalem-microarchitecture.html"><i>First Look at Nehalem Microarchitecture</i></a>, X-bit Labs, November 2, 2008, archived from <a href="http://www.xbitlabs.com/articles/cpu/display/nehalem-microarchitecture.html">the original</a> on November 6, 2008</li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://www.intel.com/technology/architecture-silicon/next-gen/">Nehalem processor</a> at <a href="/facts/Intel/SMF0gJJX">Intel</a>.com</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>I Am Nehalem <a href="http://www.metacafe.com/watch/830178/i_am_nehalem/" target="_blank">http://www.metacafe.com/watch/830178/i_am_nehalem/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Gruener, Wolfgang (August 10, 2008), Nehalem = i7: Intel unveils new Core processor brand, TG Daily, archived from the original on August 14, 2009, retrieved August 11, 2008 <a href="https://web.archive.org/web/20090814085245/http://www.tgdaily.com/content/view/38818/135" target="_blank">https://web.archive.org/web/20090814085245/http://www.tgdaily.com/content/view/38818/135</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Intel Details Upcoming New Processor Generations, Intel Corporation, March 28, 2007, archived from the original on October 6, 2009 <a href="https://web.archive.org/web/20091006160417/http://www.intel.com/pressroom/archive/releases/20070328fact.htm" target="_blank">https://web.archive.org/web/20091006160417/http://www.intel.com/pressroom/archive/releases/20070328fact.htm</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Ian, King (October 20, 2008), Intel's new faster chip right on AMD's heels, The Seattle Times, archived from the original on June 22, 2011 <a href="https://web.archive.org/web/20110622094807/http://seattletimes.nwsource.com/html/businesstechnology/2008125540_intel20.html" target="_blank">https://web.archive.org/web/20110622094807/http://seattletimes.nwsource.com/html/businesstechnology/2008125540_intel20.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Jones, George (February 9, 2008), IAMD vs Intel: The future of desktop CPUs, PC Advisor UK, archived from the original on June 23, 2008 <a href="https://web.archive.org/web/20080623011636/http://www.pcadvisor.co.uk:80/news/index.cfm?newsid=12061&pn=3" target="_blank">https://web.archive.org/web/20080623011636/http://www.pcadvisor.co.uk:80/news/index.cfm?newsid=12061&pn=3</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"Archived copy" (PDF). Archived from the original (PDF) on November 29, 2015. Retrieved November 30, 2015.{{cite web}}: CS1 maint: archived copy as title (link) <a href="https://web.archive.org/web/20151129231923/http://files.shareholder.com/downloads/INTC/0x0x348508/C9259E98-BE06-42C8-A433-E28F64CB8EF2/TurboBoostWhitePaper.pdf" target="_blank">https://web.archive.org/web/20151129231923/http://files.shareholder.com/downloads/INTC/0x0x348508/C9259E98-BE06-42C8-A433-E28F64CB8EF2/TurboBoostWhitePaper.pdf</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Kanter, David. "Inside Nehalem: Intel's Future Processor and System". <a href="https://www.realworldtech.com/nehalem/4/" target="_blank">https://www.realworldtech.com/nehalem/4/</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Kanter, David. "Inside Nehalem: Intel's Future Processor and System". <a href="https://www.realworldtech.com/nehalem/8/" target="_blank">https://www.realworldtech.com/nehalem/8/</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Kanter, David. "Intel's Sandy Bridge Microarchitecture". <a href="https://www.realworldtech.com/sandy-bridge/6/" target="_blank">https://www.realworldtech.com/sandy-bridge/6/</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>"Inside Nehalem: Intel's Future Processor and System". Retrieved December 29, 2014. <a href="http://www.realworldtech.com/nehalem/8/" target="_blank">http://www.realworldtech.com/nehalem/8/</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>"Feature - Intel Core i7 - Nehalem Architecture Dive". bit-tech. Retrieved December 29, 2014. <a href="http://www.bit-tech.net/hardware/cpus/2008/11/03/intel-core-i7-nehalem-architecture-dive/5" target="_blank">http://www.bit-tech.net/hardware/cpus/2008/11/03/intel-core-i7-nehalem-architecture-dive/5</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>"Intel Developer Zone". Intel. <a href="https://www.intel.com/content/www/us/en/developer/overview.html" target="_blank">https://www.intel.com/content/www/us/en/developer/overview.html</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>"Intel's dual teamed approached to micro-architecture development", PC Watch (in Japanese), January 29, 2008 <a href="http://pc.watch.impress.co.jp/docs/2008/0129/kaigai412.htm" target="_blank">http://pc.watch.impress.co.jp/docs/2008/0129/kaigai412.htm</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>Botezatu, Bogdan (April 22, 2008), Intel: No Overclocking for Mainstream Nehalems, Softpedia <a href="http://news.softpedia.com/news/Intel-No-Overclocking-for-Mainstream-Nehalems-84019.shtml" target="_blank">http://news.softpedia.com/news/Intel-No-Overclocking-for-Mainstream-Nehalems-84019.shtml</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> <li id="fn:15"><p>NO EXECUTE! <a href="http://www.emulators.com/docs/nx24_hot_chips.htm" target="_blank">http://www.emulators.com/docs/nx24_hot_chips.htm</a> <a href="#fnref:15" class="footnote-back-ref">↩</a></p></li> <li id="fn:16"><p>"Nehalem - Microarchitectures - Intel - WikiChip". en.wikichip.org. Retrieved February 9, 2021. <a href="https://en.wikichip.org/wiki/intel/microarchitectures/nehalem_(client)" target="_blank">https://en.wikichip.org/wiki/intel/microarchitectures/nehalem_(client)</a> <a href="#fnref:16" class="footnote-back-ref">↩</a></p></li> <li id="fn:17"><p>Johan De Gelas. "AnandTech - High-End x86: The Nehalem EX Xeon 7500 and Dell R810". Retrieved December 29, 2014. <a href="http://www.anandtech.com/show/3648/xeon-7500-dell-r810/4" target="_blank">http://www.anandtech.com/show/3648/xeon-7500-dell-r810/4</a> <a href="#fnref:17" class="footnote-back-ref">↩</a></p></li> <li id="fn:18"><p>AMD launches 12-core Opteron server chips, Intel counters with the 8-core Xeon 7500, engadedget.com, March 31, 2010, retrieved March 31, 2010 <a href="https://www.engadget.com/2010/03/30/amd-launches-12-core-opteron-server-chips-intel-counters-with-t/" target="_blank">https://www.engadget.com/2010/03/30/amd-launches-12-core-opteron-server-chips-intel-counters-with-t/</a> <a href="#fnref:18" class="footnote-back-ref">↩</a></p></li> <li id="fn:19"><p>Nebojsa Novakovic (February 12, 2009), Intel's next bunch of fun CPUs moves to 2010, CNN International, archived from the original on March 4, 2009, retrieved March 1, 2009 <a href="https://web.archive.org/web/20090304215925/http://www.theinquirer.net/inquirer/opinion/976/1050976/intel-bunch-fun-cpus-moves-2010" target="_blank">https://web.archive.org/web/20090304215925/http://www.theinquirer.net/inquirer/opinion/976/1050976/intel-bunch-fun-cpus-moves-2010</a> <a href="#fnref:19" class="footnote-back-ref">↩</a></p></li> <li id="fn:20"><p>Intel Xeon Processor 5500 Series Product brief, (Document Number: 321579-001US) (PDF), Intel, April 1, 2009, archived from the original (PDF) on October 9, 2016, retrieved August 27, 2010 <a href="https://web.archive.org/web/20161009120809/http://www-2000.ibm.com/partnerworld/ap/kr/intel_xeon_5500_prodbrief.pdf" target="_blank">https://web.archive.org/web/20161009120809/http://www-2000.ibm.com/partnerworld/ap/kr/intel_xeon_5500_prodbrief.pdf</a> <a href="#fnref:20" class="footnote-back-ref">↩</a></p></li> <li id="fn:21"><p>Core i7 to make leap to Xeon in early 2009, Legacy.macnn.com, archived from the original on December 7, 2008, retrieved November 24, 2008 <a href="https://web.archive.org/web/20081207114716/http://legacy.macnn.com/articles/08/11/13/xeon.i7.in.early.2009/" target="_blank">https://web.archive.org/web/20081207114716/http://legacy.macnn.com/articles/08/11/13/xeon.i7.in.early.2009/</a> <a href="#fnref:21" class="footnote-back-ref">↩</a></p></li> <li id="fn:22"><p>Fuad Abazovic (January 28, 2009), Nehalem based Xeon comes Mar 29th, Fudzilla.com, retrieved January 28, 2009[permanent dead link] <a href="http://www.fudzilla.com/processors/processors/processors/nehalem-based-xeon-comes-mar-29th" target="_blank">http://www.fudzilla.com/processors/processors/processors/nehalem-based-xeon-comes-mar-29th</a> <a href="#fnref:22" class="footnote-back-ref">↩</a></p></li> <li id="fn:23"><p>Intel Xeon Processor 3500 Series, Intel, April 1, 2009, retrieved April 10, 2009 <a href="http://www.intel.com/cd/channel/reseller/asmo-na/eng/products/server/processors/3500/feature/index.htm" target="_blank">http://www.intel.com/cd/channel/reseller/asmo-na/eng/products/server/processors/3500/feature/index.htm</a> <a href="#fnref:23" class="footnote-back-ref">↩</a></p></li> <li id="fn:24"><p>Teglet, Traian (November 13, 2008), Intel to Add New Nehalem Xeon Processor, softpedia, retrieved November 13, 2008 <a href="http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml" target="_blank">http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml</a> <a href="#fnref:24" class="footnote-back-ref">↩</a></p></li> <li id="fn:25"><p>Teglet, Traian (November 13, 2008), Intel to Add New Nehalem Xeon Processor, softpedia, retrieved November 13, 2008 <a href="http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml" target="_blank">http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml</a> <a href="#fnref:25" class="footnote-back-ref">↩</a></p></li> <li id="fn:26"><p>Teglet, Traian (November 13, 2008), Intel to Add New Nehalem Xeon Processor, softpedia, retrieved November 13, 2008 <a href="http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml" target="_blank">http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml</a> <a href="#fnref:26" class="footnote-back-ref">↩</a></p></li> <li id="fn:27"><p>Teglet, Traian (November 13, 2008), Intel to Add New Nehalem Xeon Processor, softpedia, retrieved November 13, 2008 <a href="http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml" target="_blank">http://news.softpedia.com/news/Intel-to-Add-New-Nehalem-Xeon-Processors-97856.shtml</a> <a href="#fnref:27" class="footnote-back-ref">↩</a></p></li> <li id="fn:28"><p>"Intel Core i7 Processor Extreme Datasheet, Volume 2, (Document Number: 320835-002)" (PDF). Intel. November 1, 2008. Archived from the original (PDF) on January 17, 2009. Retrieved March 24, 2009. <a href="https://web.archive.org/web/20090117082202/http://download.intel.com/design/processor/datashts/320835.pdf" target="_blank">https://web.archive.org/web/20090117082202/http://download.intel.com/design/processor/datashts/320835.pdf</a> <a href="#fnref:28" class="footnote-back-ref">↩</a></p></li> <li id="fn:29"><p>Worrel, Jon (February 9, 2009), Core i7 950 and 975 to replace 940 and 965, Fudzilla, retrieved February 10, 2009[permanent dead link] <a href="http://www.fudzilla.com/processors/processors/processors/core-i7-950-and-975-to-replace-940-and-965" target="_blank">http://www.fudzilla.com/processors/processors/processors/core-i7-950-and-975-to-replace-940-and-965</a> <a href="#fnref:29" class="footnote-back-ref">↩</a></p></li> <li id="fn:30"><p>Intel to launch new Core i7 960 and Celerons, archived from the original on July 10, 2009 <a href="https://web.archive.org/web/20090710011612/http://www.guru3d.com/news/intel-to-launch-new-core-i7-960-and-celerons/" target="_blank">https://web.archive.org/web/20090710011612/http://www.guru3d.com/news/intel-to-launch-new-core-i7-960-and-celerons/</a> <a href="#fnref:30" class="footnote-back-ref">↩</a></p></li> <li id="fn:31"><p>Worrel, Jon (February 9, 2009), Core i7 950 and 975 to replace 940 and 965, Fudzilla, retrieved February 10, 2009[permanent dead link] <a href="http://www.fudzilla.com/processors/processors/processors/core-i7-950-and-975-to-replace-940-and-965" target="_blank">http://www.fudzilla.com/processors/processors/processors/core-i7-950-and-975-to-replace-940-and-965</a> <a href="#fnref:31" class="footnote-back-ref">↩</a></p></li> <li id="fn:32"><p>Intel Quietly Announces Core i5 and Core i3 Branding, AnandTech, June 17, 2009 <a href="http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3585" target="_blank">http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3585</a> <a href="#fnref:32" class="footnote-back-ref">↩</a></p></li> <li id="fn:33"><p>Intel Quietly Announces Core i5 and Core i3 Branding, AnandTech, June 17, 2009 <a href="http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3585" target="_blank">http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3585</a> <a href="#fnref:33" class="footnote-back-ref">↩</a></p></li> <li id="fn:34"><p>Intel Xeon Processor 5000 SequenceTechnical Documents, archived from the original on November 26, 2011 <a href="https://web.archive.org/web/20111126215023/http://www.intel.com/content/www/us/en/processors/xeon/xeon-processor-5000-sequence/Xeon5000TechnicalResources.html" target="_blank">https://web.archive.org/web/20111126215023/http://www.intel.com/content/www/us/en/processors/xeon/xeon-processor-5000-sequence/Xeon5000TechnicalResources.html</a> <a href="#fnref:34" class="footnote-back-ref">↩</a></p></li> <li id="fn:35"><p>Intel Xeon Processor 5500 Series Datasheet Volume 2 (PDF), Intel, March 2009, archived from the original (PDF) on April 15, 2011, retrieved May 1, 2009 <a href="https://web.archive.org/web/20110415201400/http://www.intel.com/Assets/PDF/datasheet/321322.pdf" target="_blank">https://web.archive.org/web/20110415201400/http://www.intel.com/Assets/PDF/datasheet/321322.pdf</a> <a href="#fnref:35" class="footnote-back-ref">↩</a></p></li> </ol>