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EPYC 7643 - AMD
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EPYC 7643
General Info
DesignerAMD
ManufacturerTSMC, GlobalFoundries
Model Number7643
Part Number100-000000326,
100-100000326WOF
MarketServer
IntroductionJanuary 12, 2021 (announced)
March 15, 2021 (launched)
Release Price$4,995
ShopAmazon
General Specs
FamilyEPYC
Series7003
LockedYes
Frequency2,300 MHz
Turbo Frequency3,600 MHz
Clock multiplier23
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureZen 3
Core NameMilan
Core Family25
Core Model1
Core SteppingB1
Process7 nm+
TechnologyCMOS
MCPYes (9 dies)
Word Size64 bit
Cores48
Threads96
Max Memory4 TiB
Multiprocessing
Max SMP2-Way (Multiprocessor)
Electrical
TDP225 W
cTDP up240 W
Packaging
PackageSP3, FCLGA-4094 (FC-OLGA)
Dimension75.4 mm × 58.5 mm × 6.26 mm
Pitch0.87 mm × 1 mm
Contacts4094
SocketSP3, LGA-4094

EPYC 7643 is a 64-bit 48-core x86 server microprocessor designed and introduced by AMD in March 2021. This multi-chip processor, which is based on the Zen 3 microarchitecture, incorporates eight Core Complex Dies fabricated on a TSMC advanced 7 nm process and a large I/O die manufactured by GlobalFoundries. The 7643 has a TDP of 225 W with a base frequency of 2.3 GHz and a boost frequency of up to 3.6 GHz. This processor supports up to two-way SMP and up to 4 TiB of eight channel DDR4-3200 memory per socket.

Cache

Main article: Zen 3 § Cache

[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$3 MiB
3,072 KiB
3,145,728 B
L1I$1536 KiB
1,572,864 B
1.5 MiB
48 × 32 KiB8-way set associative 
L1D$1536 KiB
1,572,864 B
1.5 MiB
48 × 32 KiB8-way set associativewrite-back
L2$24 MiB
24,576 KiB
25,165,824 B
0.0234 GiB
  48 × 512 KiB8-way set associativewrite-back
L3$256 MiB
262,144 KiB
268,435,456 B
0.25 GiB
  8 × 32 MiB16-way set associativewrite-back

Memory controller

Main article: Milan § Memory Interface

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-3200
Supports ECCYes
Max Mem4 TiB
Controllers8
Channels8
Max Bandwidth190.73 GiB/s
195,307.52 MiB/s
204.795 GB/s
204,794.778 MB/s
0.186 TiB/s
0.205 TB/s
Bandwidth
Single 23.84 GiB/s
Double 47.68 GiB/s
Quad 95.37 GiB/s
Hexa 143.05 GiB/s
Octa 190.73 GiB/s

Expansions

Main article: Milan § I/O Interfaces

[Edit/Modify Expansions Info]

ide icon.svg
Expansion Options
PCIeRevision: 4.0
Max Lanes: 128
SATARevision: 3.0
Max Ports: 32
USBRevision: 3.1
Max Ports: 4


Features

[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
SSE4aStreaming SIMD Extensions 4a
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
SHASHA Extensions
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
SMTSimultaneous Multithreading
AMD-ViAMD-Vi (I/O MMU virtualization)
AMD-VAMD Virtualization
SMESecure Memory Encryption
TSMETransparent SME
SEVSecure Encrypted Virtualization
SenseMISenseMI Technology

References

Retrieved from "https://en.wikichip.org/w/index.php?title=amd/epyc/7643&oldid=98930"
Facts about "EPYC 7643 - AMD"
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Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
EPYC 7643 - AMD#pcie +
base frequency2,300 MHz (2.3 GHz, 2,300,000 kHz) +
clock multiplier23 +
core count48 +
core family25 +
core model1 +
core nameMilan +
core steppingB1 +
designerAMD +
die count9 +
familyEPYC +
first announcedJanuary 12, 2021 +
first launchedMarch 15, 2021 +
full page nameamd/epyc/7643 +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has amd amd-v technologytrue +
has amd amd-vi technologytrue +
has amd secure encrypted virtualization technologytrue +
has amd secure memory encryption technologytrue +
has amd sensemi technologytrue +
has amd transparent secure memory encryption technologytrue +
has ecc memory supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension + and SenseMI Technology +
has locked clock multipliertrue +
has simultaneous multithreadingtrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
is multi-chip packagetrue +
isax86-64 +
isa familyx86 +
l1$ size3,072 KiB (3,145,728 B, 3 MiB) +
l1d$ description8-way set associative +
l1d$ size1,536 KiB (1,572,864 B, 1.5 MiB) +
l1i$ description8-way set associative +
l1i$ size1,536 KiB (1,572,864 B, 1.5 MiB) +
l2$ description8-way set associative +
l2$ size24 MiB (24,576 KiB, 25,165,824 B, 0.0234 GiB) +
l3$ description16-way set associative +
l3$ size256 MiB (262,144 KiB, 268,435,456 B, 0.25 GiB) +
ldateMarch 15, 2021 +
manufacturerTSMC + and GlobalFoundries +
market segmentServer +
max cpu count2 +
max memory4,194,304 MiB (4,294,967,296 KiB, 4,398,046,511,104 B, 4,096 GiB, 4 TiB) +
max memory bandwidth190.73 GiB/s (195,307.52 MiB/s, 204.795 GB/s, 204,794.778 MB/s, 0.186 TiB/s, 0.205 TB/s) +
max memory channels8 +
max sata ports32 +
max usb ports4 +
microarchitectureZen 3 +
model number7643 +
nameEPYC 7643 +
packageSP3 + and FCLGA-4094 +
part number100-000000326 + and 100-100000326WOF +
release price$ 4,995.00 (€ 4,495.50, £ 4,045.95, ¥ 516,133.35) +
series7003 +
smp max ways2 +
socketSP3 + and LGA-4094 +
supported memory typeDDR4-3200 +
tdp225 W (225,000 mW, 0.302 hp, 0.225 kW) +
tdp up240 W (240,000 mW, 0.322 hp, 0.24 kW) +
technologyCMOS +
thread count96 +
turbo frequency3,600 MHz (3.6 GHz, 3,600,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +