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{{intel title|Xeon E7-2820}}
 
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{{chip
 
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| name                = Xeon E7-2820
 
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| no image            = Yes
 
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| image              =
 
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| image size          =
 
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| caption            =
 
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| designer            = Intel
 
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| manufacturer        = Intel
 
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| model number        = E7-2820
 
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| part number        = AT80615007245AA
 
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| part number 2      =
 
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| part number 3      =
 
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| part number 4      =
 
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| market              = Server
 
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| first announced    = April 5, 2011
 
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| first launched      = April 5, 2011
 
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| last order          = August 21, 2015
 
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| last shipment      = February 2, 2018
 
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| release price      = $1334.00
 
  
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| family              = Xeon E7
 
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| series              = E7-2800
 
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| locked              = Yes
 
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| frequency          = 1,999.99 MHz
 
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| turbo frequency    = Yes
 
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| turbo frequency1    = 2,266.66 MHz
 
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| turbo frequency2    = 2,266.66 MHz
 
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| turbo frequency3    = 2,133.33 MHz
 
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| turbo frequency4    = 2,133.33 MHz
 
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| turbo frequency5    = 2,133.33 MHz
 
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| turbo frequency6    = 2,133.33 MHz
 
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| turbo frequency7    = 2,133.33 MHz
 
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| turbo frequency8    = 2,133.33 MHz
 
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| bus type            = QPI
 
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| bus speed          =
 
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| bus rate            = 5.86 GT/s
 
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| clock multiplier    = 15
 
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| s-spec              = SLC3R
 
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| s-spec es          =
 
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| s-spec qs          =
 
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| cpuid              = 206F2
 
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| isa family          = x86
 
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| isa                = x86-64
 
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| microarch          = Westmere
 
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| platform            = Boxboro
 
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| chipset            = Boxboro
 
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| core name          = Westmere EX
 
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| core family        = 6
 
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| core model          = 47
 
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| core stepping      = A2
 
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| process            = 32 nm
 
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| transistors        = 2,600,000,000
 
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| technology          = CMOS
 
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| die size            = 513 mm²
 
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| word size          = 64 bit
 
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| core count          = 8
 
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| thread count        = 16
 
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| max cpus            = 2
 
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| max memory          = 1 TiB
 
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| v core              = 1.35 V
 
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| v core tolerance    =
 
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| sdp                =
 
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| tdp                = 105 W
 
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| ctdp down          =
 
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| ctdp down frequency =
 
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| ctdp up            =
 
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| ctdp up frequency  =
 
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| temp min            =
 
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| temp max            =
 
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| tjunc min          = 
 
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| tjunc max          =
 
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| tcase min          = 5 °C
 
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| tcase max          = 64 °C
 
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| tstorage min        = -40 °C
 
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| tstorage max        = 85 °C
 
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| package module 1    = {{packages/intel/lga-1567}}
 
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}}
 
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'''Xeon E7-2820''' is a {{arch|64}} octa-core [[x86]] data center microprocessor that supports up to 2 sockets. This first generation {{intel|Xeon E7}} processor, {{intel|Westmere|Westmere}}-based, operates at a base frequency of 2 GHz with {{intel|turbo boost technology|turbo}} frequency of 2.266 GHz for 2 active cores. This chip has a TDP of 105 W, supporting up to 4 channels of DDR3 with support of up to 1 TB of memory.
 
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== Cache ==
 
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{{main|intel/microarchitectures/westmere#Memory_Hierarchy|l1=Westmere § Cache}}
 
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{{cache size
 
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|l1 cache = 512 KiB
 
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|l1i cache=256 KiB
 
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|l1i break=8x32 KiB
 
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|l1i desc=4-way set associative
 
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|l1i policy=write-back
 
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|l1d cache=256 KiB
 
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|l1d break=8x32 KiB
 
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|l1d desc=8-way set associative
 
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|l1d policy=write-back
 
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|l2 cache=2 MiB
 
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|l2 break=8x256 KiB
 
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|l2 desc=8-way set associative
 
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|l2 policy=write-back
 
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|l3 cache=18 MiB
 
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|l3 break=8x3 MiB
 
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|l3 desc=16-way set associative
 
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|l3 policy=write-back
 
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}}
 
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== Graphics ==
 
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This SoC has no integrated graphics processing unit.
 
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== Memory controller ==
 
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{{memory controller
 
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|type=DDR3-1066
 
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|ecc=Yes
 
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|max mem=1 TiB
 
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|controllers=1
 
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|channels=4
 
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|max bandwidth=31.77 GiB/s
 
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|bandwidth schan=7.942 GiB/s
 
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|bandwidth dchan=15.88 GiB/s
 
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|bandwidth tchan=23.83 GiB/s
 
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|bandwidth qchan=31.77 GiB/s
 
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}}
 
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== Features ==
 
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{{x86 features
 
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|real=Yes
 
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|protected=Yes
 
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|smm=Yes
 
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|fpu=Yes
 
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|x8616=Yes
 
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|x8632=Yes
 
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|x8664=Yes
 
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|nx=Yes
 
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|3dnow=No
 
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|e3dnow=No
 
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|mmx=Yes
 
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|emmx=Yes
 
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|sse=Yes
 
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|sse2=Yes
 
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|sse3=Yes
 
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|ssse3=Yes
 
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|sse41=Yes
 
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|sse42=Yes
 
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|sse4a=No
 
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|avx=No
 
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|avx2=No
 
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|abm=No
 
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|tbm=No
 
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|bmi1=No
 
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|bmi2=No
 
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|fma3=No
 
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|fma4=No
 
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|aes=Yes
 
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|rdrand=No
 
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|sha=No
 
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|xop=No
 
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|adx=No
 
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|clmul=No
 
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|f16c=No
 
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|tbt1=Yes
 
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|tbt2=No
 
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|tbmt3=No
 
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|bpt=No
 
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|eist=Yes
 
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|flex=No
 
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|fastmem=No
 
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|isrt=No
 
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|mwt=No
 
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|sipp=No
 
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|att=No
 
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|ipt=No
 
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|tsx=No
 
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|txt=Yes
 
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|ht=Yes
 
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|vpro=No
 
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|vtx=Yes
 
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|vtd=Yes
 
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|ept=Yes
 
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|mpx=No
 
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|sgx=No
 
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|securekey=No
 
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|osguard=No
 
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|smartmp=No
 
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|powernow=No
 
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|amdv=No
 
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|rvi=No
 
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}}
 

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Facts about "Xeon E7-2820 - Intel"
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Xeon E7-2820 - Intel#package +
base frequency1,999.99 MHz (2 GHz, 1,999,990 kHz) +
bus rate5,860 MT/s (5.86 GT/s, 5,860,000 kT/s) +
bus typeQPI +
chipsetBoxboro +
clock multiplier15 +
core count8 +
core family6 +
core model47 +
core nameWestmere EX +
core steppingA2 +
core voltage1.35 V (13.5 dV, 135 cV, 1,350 mV) +
cpuid206F2 +
designerIntel +
die area513 mm² (0.795 in², 5.13 cm², 513,000,000 µm²) +
familyXeon E7 +
first announcedApril 5, 2011 +
first launchedApril 5, 2011 +
full page nameintel/xeon e7/e7-2820 +
has ecc memory supporttrue +
has extended page tables supporttrue +
has featureAdvanced Encryption Standard Instruction Set Extension +, Hyper-Threading Technology +, Turbo Boost Technology 1.0 +, Enhanced SpeedStep Technology +, Trusted Execution Technology +, Intel VT-x +, Intel VT-d + and Extended Page Tables +
has intel enhanced speedstep technologytrue +
has intel trusted execution technologytrue +
has intel turbo boost technology 1 0true +
has intel vt-d technologytrue +
has intel vt-x technologytrue +
has locked clock multipliertrue +
has second level address translation supporttrue +
has simultaneous multithreadingtrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
isax86-64 +
isa familyx86 +
l1$ size512 KiB (524,288 B, 0.5 MiB) +
l1d$ description8-way set associative +
l1d$ size256 KiB (262,144 B, 0.25 MiB) +
l1i$ description4-way set associative +
l1i$ size256 KiB (262,144 B, 0.25 MiB) +
l2$ description8-way set associative +
l2$ size2 MiB (2,048 KiB, 2,097,152 B, 0.00195 GiB) +
l3$ description16-way set associative +
l3$ size18 MiB (18,432 KiB, 18,874,368 B, 0.0176 GiB) +
last orderAugust 21, 2015 +
last shipmentFebruary 2, 2018 +
ldateApril 5, 2011 +
manufacturerIntel +
market segmentServer +
max case temperature337.15 K (64 °C, 147.2 °F, 606.87 °R) +
max cpu count2 +
max memory1,048,576 MiB (1,073,741,824 KiB, 1,099,511,627,776 B, 1,024 GiB, 1 TiB) +
max memory bandwidth31.77 GiB/s (32,532.48 MiB/s, 34.113 GB/s, 34,112.778 MB/s, 0.031 TiB/s, 0.0341 TB/s) +
max memory channels4 +
max storage temperature358.15 K (85 °C, 185 °F, 644.67 °R) +
microarchitectureWestmere +
min case temperature278.15 K (5 °C, 41 °F, 500.67 °R) +
min storage temperature233.15 K (-40 °C, -40 °F, 419.67 °R) +
model numberE7-2820 +
nameXeon E7-2820 +
packageFCLGA-8 +
part numberAT80615007245AA +
platformBoxboro +
process32 nm (0.032 μm, 3.2e-5 mm) +
release price$ 1,334.00 (€ 1,200.60, £ 1,080.54, ¥ 137,842.22) +
s-specSLC3R +
seriesE7-2800 +
smp max ways2 +
supported memory typeDDR3-1066 +
tdp105 W (105,000 mW, 0.141 hp, 0.105 kW) +
technologyCMOS +
thread count16 +
transistor count2,600,000,000 +
turbo frequency (1 core)2,266.66 MHz (2.267 GHz, 2,266,660 kHz) +
turbo frequency (2 cores)2,266.66 MHz (2.267 GHz, 2,266,660 kHz) +
turbo frequency (3 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
turbo frequency (4 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
turbo frequency (5 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
turbo frequency (6 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
turbo frequency (7 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
turbo frequency (8 cores)2,133.33 MHz (2.133 GHz, 2,133,330 kHz) +
word size64 bit (8 octets, 16 nibbles) +