General information Type cpu / microprocessor Market segment server Family intel xeon e7-4800 Model number e7-4820 Cpu part number at80615005772ac is an oem/tray microprocessor Frequency 2000 mhz Turbo frequency 2267 mhz Bus speed 5.86 gt/s qpi (2933 mhz) Clock multiplier 15 Package 1567-land flip-chip land grid array Socket socket 1567 (lga1567) Size 2.22" x 1.94" / 5.647cm x 4.917cm Introduction date apr 3, 2011 S-spec numbers Production processors Part number slc3g At80615005772ac + Architecture / microarchitecture Microarchitecture nehalem Platform boxboro-ex Processor core westmere-ex Core stepping a2 (slc3g) Cpuid 206f2 (slc3g) Manufacturing process 0.032 micron high-k metal gate process Data width 64 bit The number of cores 8 The number of threads 16 Floating point unit integrated Level 2 cache size 8 x 256 kb Level 3 cache size 18 mb Physical memory 32 gb Multiprocessing up to 4 processors Low power features enhanced speedstep technology On-chip peripherals 4-channel ddr3 memory controller Electrical/thermal parameters Maximum operating temperature 64¡ãc Thermal design power 105 watt Notes on intel at80615005772ac Memory controller supports ddr3-1333 memory Ecc memory is supported