Intel Xeon 4-Core X5550 2.66GHz LGA1366

Type CPU / Microprocessor lt;br /gt;Family: Intel Xeon lt;br /gt;Model number: X5550 lt;br /gt;CPU part number: AT80602000771AA (Q1EH, Q1GJ, QGXU, SLBF5) lt;br /gt;Box part number: BX80602X5550 (SLBF5) lt;br /gt;Frequency (MHz): 2667 lt;br /gt;Bus speed (MHz): 3200 MHz QPI lt;br /gt;Package 1366-land Flip-Chip Land Grid Array (FC-LGA8)lt;br /gt;1.77 x 1.67 (4.5 cm x 4.25 cm) lt;br /gt;Socket Socket 1366 (LGA1366) lt;br /gt;#160;#160;lt;br /gt;Architecture / Microarchitecture lt;br /gt;Processor core Nehalem-EP lt;br /gt;Core steppings B0 (Q1EH)lt;br /gt;D0 (SLBF5) lt;br /gt;Manufacturing process 0.045 micron lt;br /gt;Data width 64 bit lt;br /gt;Number of cores 4 lt;br /gt;Floating Point Unit Integrated lt;br /gt;Level 1 cache size: 4 x 32 KB instruction cacheslt;br /gt;4 x 32 KB data caches lt;br /gt;Level 2 cache size: 4 x 256 KB lt;br /gt;Level 3 cache size: 8 MB lt;br /gt;Physical memory (GB): 144 lt;br /gt;Multiprocessing Up to 2 processors lt;br /gt;Features MMX instruction set lt;br /gt;SSE lt;br /gt;SSE2 lt;br /gt;SSE3 lt;br /gt;Supplemental SSE3 lt;br /gt;SSE4.1#160;#160;lt;br /gt;SSE4.2#160;#160;lt;br /gt;EM64T technology#160;#160;lt;br /gt;Virtualization technology lt;br /gt;Execute Disable bit#160;#160;lt;br /gt;Turbo Boost Technology lt;br /gt;Hyper-Threading technology lt;br /gt; lt;br /gt;Low power features Thread C1/C1E, C3 and C6 states lt;br /gt;Core C1/C1E, C3 and C6 states lt;br /gt;Package C1/C1E, C3 and C6 states lt;br /gt;Enhanced SpeedStep technology#160;#160;lt;br /gt; lt;br /gt;On-chip peripherals Integrated 6-channel DDR3 SDRAM Memory controller lt;br /gt;Quick Path Interconnect (2 links) lt;br /gt;#160;#160; lt;br /gt;Electrical/Thermal parameters lt;br /gt;V core (V)#160;#160;?#160;#160;0.75 - 1.35 lt;br /gt;Minimum/Maximum operating temperature (°C): 5 - 75 / 5 - 81 lt;br /gt;Maximum power dissipation (W): 197.97 / 155.56 (sustained) lt;br /gt;Thermal Design Power (W): 95