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{{intel title|Xeon Platinum 8256}}
 
{{intel title|Xeon Platinum 8256}}
−
{{chip}}
+
{{chip
−
'''Xeon Platinum 8256''' is a {{arch|64}} [[4-core]] [[x86]] high-performance server microprocessor introduced by [[Intel]] in early [[2019]]. The Platinum 8256 is based on the {{intel|Cascade Lake|l=arch}} microarchitecture and is manufactured on a [[14 nm process]]. This chip supports 8-way multiprocessing, sports 2 {{x86|AVX-512}} [[FMA]] units as well as three {{intel|Ultra Path Interconnect}} links. This microprocessor supports up 1 TiB of hexa-channel DDR4-2933 memory, operates at 3.8 GHz with a TDP of 105 W and features a {{intel|turbo boost}} frequency of up to 3.9 GHz.
+
|name=Xeon Platinum 8256
 +
|image=cascade lake sp (front).png
 +
|designer=Intel
 +
|manufacturer=Intel
 +
|model number=8256
 +
|part number=CD8069504194701
 +
|part number 2=BX806958256
 +
|s-spec=SRF94
 +
|s-spec qs=QRAP
 +
|market=Server
 +
|first announced=April 2, 2019
 +
|first launched=April 2, 2019
 +
|release price (tray)=$7007.00
 +
|release price (box)=$7014.00
 +
|family=Xeon Platinum
 +
|series=8200
 +
|locked=Yes
 +
|frequency=3,800 MHz
 +
|turbo frequency1=3,900 MHz
 +
|clock multiplier=38
 +
|cpuid=0x50655
 +
|isa=x86-64
 +
|isa family=x86
 +
|microarch=Cascade Lake
 +
|platform=Purley
 +
|chipset=Lewisburg
 +
|core name=Cascade Lake SP
 +
|core family=6
 +
|core stepping=B0
 +
|core stepping 2=B1
 +
|process=14 nm
 +
|technology=CMOS
 +
|word size=64 bit
 +
|core count=4
 +
|thread count=8
 +
|max memory=1 TiB
 +
|max cpus=8
 +
|smp interconnect=UPI
 +
|smp interconnect links=3
 +
|smp interconnect rate=10.4 GT/s
 +
|tdp=105 W
 +
|package name 1=intel,fclga_3647
 +
|predecessor=Xeon Platinum 8156
 +
|predecessor link=intel/xeon_platinum/8156
 +
}}
 +
'''Xeon Platinum 8256''' is a {{arch|64}} [[quad-core]] [[x86]] high-performance server microprocessor introduced by [[Intel]] in early [[2019]]. The Platinum 8256 is based on the {{intel|Cascade Lake|l=arch}} microarchitecture and is manufactured on a [[14 nm process]]. This chip supports 8-way multiprocessing, sports 2 {{x86|AVX-512}} [[FMA]] units as well as three {{intel|Ultra Path Interconnect}} links. This microprocessor supports up 1 TiB of hexa-channel DDR4-2933 memory, operates at 3.8 GHz with a TDP of 105 W and features a {{intel|turbo boost}} frequency of up to 3.9 GHz.
 +
 
 +
== Cache ==
 +
{{main|intel/microarchitectures/cascade_lake#Memory_Hierarchy|l1=Cascade Lake § Cache}}
 +
The Xeon Platinum 8256 features a considerably larger non-default 16.5 MiB of [[L3]], a size that would normally be found on a 12-core part.
 +
{{cache size
 +
|l1 cache=256 KiB
 +
|l1i cache=128 KiB
 +
|l1i break=4x32 KiB
 +
|l1i desc=8-way set associative
 +
|l1d cache=128 KiB
 +
|l1d break=4x32 KiB
 +
|l1d desc=8-way set associative
 +
|l1d policy=write-back
 +
|l2 cache=4 MiB
 +
|l2 break=4x1 MiB
 +
|l2 desc=16-way set associative
 +
|l2 policy=write-back
 +
|l3 cache=16.5 MiB
 +
|l3 break=12x1.375 MiB
 +
|l3 desc=11-way set associative
 +
|l3 policy=write-back
 +
}}
 +
 
 +
== Memory controller ==
 +
{{memory controller
 +
|type=DDR4-2933
 +
|ecc=Yes
 +
|max mem=1 TiB
 +
|controllers=2
 +
|channels=6
 +
|max bandwidth=131.13 GiB/s
 +
|bandwidth schan=21.86 GiB/s
 +
|bandwidth dchan=43.71 GiB/s
 +
|bandwidth qchan=87.42 GiB/s
 +
|bandwidth hchan=131.13 GiB/s
 +
}}
 +
 
 +
== Expansions ==
 +
{{expansions main
 +
|
 +
{{expansions entry
 +
|type=PCIe
 +
|pcie revision=3.0
 +
|pcie lanes=48
 +
|pcie config=1x16
 +
|pcie config 2=x8
 +
|pcie config 3=x4
 +
}}
 +
}}
 +
 
 +
== Features ==
 +
{{x86 features
 +
|real=Yes
 +
|protected=Yes
 +
|smm=Yes
 +
|fpu=Yes
 +
|x8616=Yes
 +
|x8632=Yes
 +
|x8664=Yes
 +
|nx=Yes
 +
|mmx=Yes
 +
|emmx=Yes
 +
|sse=Yes
 +
|sse2=Yes
 +
|sse3=Yes
 +
|ssse3=Yes
 +
|sse41=Yes
 +
|sse42=Yes
 +
|sse4a=No
 +
|avx=Yes
 +
|avx2=Yes
 +
|avx512f=Yes
 +
|avx512cd=Yes
 +
|avx512er=No
 +
|avx512pf=No
 +
|avx512bw=Yes
 +
|avx512dq=Yes
 +
|avx512vl=Yes
 +
|avx512ifma=No
 +
|avx512vbmi=No
 +
|avx5124fmaps=No
 +
|avx512vnni=Yes
 +
|avx5124vnniw=No
 +
|avx512vpopcntdq=No
 +
|avx512units=2
 +
|abm=Yes
 +
|tbm=No
 +
|bmi1=Yes
 +
|bmi2=Yes
 +
|fma3=Yes
 +
|fma4=No
 +
|aes=Yes
 +
|rdrand=Yes
 +
|sha=No
 +
|xop=No
 +
|adx=Yes
 +
|clmul=Yes
 +
|f16c=Yes
 +
|bfloat16=No
 +
|tbt1=No
 +
|tbt2=Yes
 +
|tbmt3=No
 +
|bpt=No
 +
|eist=Yes
 +
|sst=Yes
 +
|flex=No
 +
|fastmem=No
 +
|ivmd=Yes
 +
|intelnodecontroller=Yes
 +
|intelnode=Yes
 +
|kpt=Yes
 +
|ptt=Yes
 +
|intelrunsure=Yes
 +
|mbe=Yes
 +
|isrt=No
 +
|sba=No
 +
|mwt=No
 +
|sipp=No
 +
|att=No
 +
|ipt=No
 +
|tsx=Yes
 +
|txt=Yes
 +
|ht=Yes
 +
|vpro=Yes
 +
|vtx=Yes
 +
|vtd=Yes
 +
|ept=Yes
 +
|mpx=No
 +
|sgx=No
 +
|securekey=No
 +
|osguard=No
 +
|intqat=No
 +
|dlboost=Yes
 +
|3dnow=No
 +
|e3dnow=No
 +
|smartmp=No
 +
|powernow=No
 +
|amdvi=No
 +
|amdv=No
 +
|amdsme=No
 +
|amdtsme=No
 +
|amdsev=No
 +
|rvi=No
 +
|smt=No
 +
|sensemi=No
 +
|xfr=No
 +
|xfr2=No
 +
|mxfr=No
 +
|amdpb=No
 +
|amdpb2=No
 +
|amdpbod=No
 +
}}
 +
 
 +
== Frequencies ==
 +
{{see also|intel/frequency_behavior|l1=Intel's CPU Frequency Behavior}}
 +
{{frequency table
 +
|freq_base=3,800MHz
 +
|freq_1=3,900MHz
 +
|freq_2=3,900MHz
 +
|freq_3=3,900MHz
 +
|freq_4=3,900MHz
 +
|freq_avx2_base=3,300MHz
 +
|freq_avx2_1=3,700MHz
 +
|freq_avx2_2=3,700MHz
 +
|freq_avx2_3=3,700MHz
 +
|freq_avx2_4=3,700MHz
 +
|freq_avx512_base=2,700MHz
 +
|freq_avx512_1=3,700MHz
 +
|freq_avx512_2=3,700MHz
 +
|freq_avx512_3=3,500MHz
 +
|freq_avx512_4=3,500MHz
 +
}}

Latest revision as of 01:38, 29 December 2019

Edit Values
Xeon Platinum 8256
cascade lake sp (front).png
General Info
DesignerIntel
ManufacturerIntel
Model Number8256
Part NumberCD8069504194701,
BX806958256
S-SpecSRF94
QRAP (QS)
MarketServer
IntroductionApril 2, 2019 (announced)
April 2, 2019 (launched)
Release Price$7007.00 (tray)
$7014.00 (box)
ShopAmazon
General Specs
FamilyXeon Platinum
Series8200
LockedYes
Frequency3,800 MHz
Turbo Frequency3,900 MHz (1 core)
Clock multiplier38
CPUID0x50655
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureCascade Lake
PlatformPurley
ChipsetLewisburg
Core NameCascade Lake SP
Core Family6
Core SteppingB0, B1
Process14 nm
TechnologyCMOS
Word Size64 bit
Cores4
Threads8
Max Memory1 TiB
Multiprocessing
Max SMP8-Way (Multiprocessor)
InterconnectUPI
Interconnect Links3
Interconnect Rate10.4 GT/s
Electrical
TDP105 W
Packaging
PackageFCLGA-3647 (FCLGA)
Dimension76.16 mm × 56.6 mm
Pitch0.8585 mm × 0.9906 mm
Contacts3647
SocketSocket P, LGA-3647
Succession

Xeon Platinum 8256 is a 64-bit quad-core x86 high-performance server microprocessor introduced by Intel in early 2019. The Platinum 8256 is based on the Cascade Lake microarchitecture and is manufactured on a 14 nm process. This chip supports 8-way multiprocessing, sports 2 AVX-512 FMA units as well as three Ultra Path Interconnect links. This microprocessor supports up 1 TiB of hexa-channel DDR4-2933 memory, operates at 3.8 GHz with a TDP of 105 W and features a turbo boost frequency of up to 3.9 GHz.

Cache[edit]

Main article: Cascade Lake § Cache

The Xeon Platinum 8256 features a considerably larger non-default 16.5 MiB of L3, a size that would normally be found on a 12-core part.

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$256 KiB
262,144 B
0.25 MiB
L1I$128 KiB
131,072 B
0.125 MiB
4x32 KiB8-way set associative 
L1D$128 KiB
131,072 B
0.125 MiB
4x32 KiB8-way set associativewrite-back
L2$4 MiB
4,096 KiB
4,194,304 B
0.00391 GiB
  4x1 MiB16-way set associativewrite-back
L3$16.5 MiB
16,896 KiB
17,301,504 B
0.0161 GiB
  12x1.375 MiB11-way set associativewrite-back

Memory controller[edit]

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-2933
Supports ECCYes
Max Mem1 TiB
Controllers2
Channels6
Max Bandwidth131.13 GiB/s
134,277.12 MiB/s
140.8 GB/s
140,799.765 MB/s
0.128 TiB/s
0.141 TB/s
Bandwidth
Single 21.86 GiB/s
Double 43.71 GiB/s
Quad 87.42 GiB/s
Hexa 131.13 GiB/s

Expansions[edit]

[Edit/Modify Expansions Info]

ide icon.svg
Expansion Options
PCIeRevision: 3.0
Max Lanes: 48
Configuration: 1x16, x8, x4


Features[edit]

[Edit/Modify Supported Features]

Cog-icon-grey.svg
Supported x86 Extensions & Processor Features
MMXMMX Extension
EMMXExtended MMX Extension
SSEStreaming SIMD Extensions
SSE2Streaming SIMD Extensions 2
SSE3Streaming SIMD Extensions 3
SSSE3Supplemental SSE3
SSE4.1Streaming SIMD Extensions 4.1
SSE4.2Streaming SIMD Extensions 4.2
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
AVX-512Advanced Vector 512-bit (2 Units)
AVX512FAVX-512 Foundation
AVX512CDAVX-512 Conflict Detection
AVX512BWAVX-512 Byte and Word
AVX512DQAVX-512 Doubleword and Quadword Instructions
AVX512VLAVX-512 Vector Length
AVX512_VNNIAVX-512 Vector Neural Network Instructions
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
ADXMulti-Precision Add-Carry
CLMULCarry-less Multiplication Extension
F16C16-bit Floating Point Conversion
x86-1616-bit x86
x86-3232-bit x86
x86-6464-bit x86
RealReal Mode
ProtectedProtected Mode
SMMSystem Management Mode
FPUIntegrated x87 FPU
NXNo-eXecute
HTHyper-Threading
TBT 2.0Turbo Boost Technology 2.0
EISTEnhanced SpeedStep Technology
SSTSpeed Shift Technology
TXTTrusted Execution Technology (SMX)
vProIntel vPro
VT-xVT-x (Virtualization)
VT-dVT-d (I/O MMU virtualization)
EPTExtended Page Tables (SLAT)
TSXTransactional Synchronization Extensions
VMDVolume Management Device
NMNode Manager
KPTKey Protection Technology
PTTPlatform Trust Technology
Run SureRun Sure Technology (RAS Capability)
MBE CtrlMode-Based Execute Control
Node CtrlrNode Controller Support
DL BoostDeep Learning Boost

Frequencies[edit]

See also: Intel's CPU Frequency Behavior

[Modify Frequency Info]

ModeBaseTurbo Frequency/Active Cores
1234
Normal3,800MHz3,900MHz3,900MHz3,900MHz3,900MHz
AVX23,300MHz3,700MHz3,700MHz3,700MHz3,700MHz
AVX5122,700MHz3,700MHz3,700MHz3,500MHz3,500MHz
Retrieved from "https://en.wikichip.org/w/index.php?title=intel/xeon_platinum/8256&oldid=95185"
Facts about "Xeon Platinum 8256 - Intel"
RDF feed
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
Xeon Platinum 8256 - Intel#pcie +
base frequency3,800 MHz (3.8 GHz, 3,800,000 kHz) +
chipsetLewisburg +
clock multiplier38 +
core count4 +
core family6 +
core nameCascade Lake SP +
core steppingB0 + and B1 +
cpuid0x50655 +
designerIntel +
familyXeon Platinum +
first announcedApril 2, 2019 +
first launchedApril 2, 2019 +
full page nameintel/xeon platinum/8256 +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has advanced vector extensions 512true +
has ecc memory supporttrue +
has extended page tables supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Vector Extensions 512 +, Advanced Encryption Standard Instruction Set Extension +, Hyper-Threading Technology +, Turbo Boost Technology 2.0 +, Enhanced SpeedStep Technology +, Speed Shift Technology +, Trusted Execution Technology +, Intel vPro Technology +, Intel VT-x +, Intel VT-d +, Extended Page Tables +, Transactional Synchronization Extensions + and Deep Learning Boost +
has intel deep learning boosttrue +
has intel enhanced speedstep technologytrue +
has intel speed shift technologytrue +
has intel trusted execution technologytrue +
has intel turbo boost technology 2 0true +
has intel vpro technologytrue +
has intel vt-d technologytrue +
has intel vt-x technologytrue +
has locked clock multipliertrue +
has second level address translation supporttrue +
has simultaneous multithreadingtrue +
has transactional synchronization extensionstrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
isax86-64 +
isa familyx86 +
l1$ size256 KiB (262,144 B, 0.25 MiB) +
l1d$ description8-way set associative +
l1d$ size128 KiB (131,072 B, 0.125 MiB) +
l1i$ description8-way set associative +
l1i$ size128 KiB (131,072 B, 0.125 MiB) +
l2$ description16-way set associative +
l2$ size4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) +
l3$ description11-way set associative +
l3$ size16.5 MiB (16,896 KiB, 17,301,504 B, 0.0161 GiB) +
ldateApril 2, 2019 +
main imageFile:cascade lake sp (front).png +
manufacturerIntel +
market segmentServer +
max cpu count8 +
max memory1,048,576 MiB (1,073,741,824 KiB, 1,099,511,627,776 B, 1,024 GiB, 1 TiB) +
max memory bandwidth131.13 GiB/s (134,277.12 MiB/s, 140.8 GB/s, 140,799.765 MB/s, 0.128 TiB/s, 0.141 TB/s) +
max memory channels6 +
microarchitectureCascade Lake +
model number8256 +
nameXeon Platinum 8256 +
number of avx-512 execution units2 +
packageFCLGA-3647 +
part numberCD8069504194701 + and BX806958256 +
platformPurley +
process14 nm (0.014 μm, 1.4e-5 mm) +
release price$ 7,007.00 (€ 6,306.30, £ 5,675.67, ¥ 724,033.31) + and $ 7,014.00 (€ 6,312.60, £ 5,681.34, ¥ 724,756.62) +
release price (box)$ 7,014.00 (€ 6,312.60, £ 5,681.34, ¥ 724,756.62) +
release price (tray)$ 7,007.00 (€ 6,306.30, £ 5,675.67, ¥ 724,033.31) +
s-specSRF94 +
s-spec (qs)QRAP +
series8200 +
smp interconnectUPI +
smp interconnect links3 +
smp interconnect rate10.4 GT/s +
smp max ways8 +
socketSocket P + and LGA-3647 +
supported memory typeDDR4-2933 +
tdp105 W (105,000 mW, 0.141 hp, 0.105 kW) +
technologyCMOS +
thread count8 +
turbo frequency (1 core)3,900 MHz (3.9 GHz, 3,900,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +