AMD EPYC 7642 vs AMD EPYC 7643

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD EPYC 7642 or AMD EPYC 7642 – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The AMD EPYC 7642 features 48 processor cores and has the capability to manage 96 threads concurrently.
It was released in Q3/2019 and belongs to the 2 generation of the AMD EPYC series.
To use the AMD EPYC 7642, you'll need a motherboard with a SP3 socket.
The AMD EPYC 7643 features 48 processor cores and has the capability to manage 96 threads concurrently.
It was released in Q1/2021 and belongs to the 3 generation of the AMD EPYC series.
To use the AMD EPYC 7643, you'll need a motherboard with a SP3 socket.
AMD EPYC 7002 Group AMD EPYC 7003
2 Generation 3
Desktop / Server Segment Desktop / Server
AMD EPYC 7642 Name AMD EPYC 7643
AMD EPYC Family AMD EPYC
 
 

CPU Cores and Base Frequency

The AMD EPYC 7642 has 48 CPU cores and can calculate 96 threads in parallel.
The clock frequency of the AMD EPYC 7642 is 2.3 GHz
and turbo frequency for one core is 3.3 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel.
The clock frequency of the AMD EPYC 7643 is 2.3 GHz
and turbo frequency for one core is 3.6 GHz.
96 Threads 96
48x Cores 48x Zen 3
48 CPU Cores 48
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking No
3.3 GHz Turbo Frequency (1 core) 3.6 GHz
2.3 GHz Frequency 2.3 GHz
 
 

Internal Graphics

The AMD EPYC 7642 does not have integrated graphics.
The AMD EPYC 7643 does not have integrated graphics.
-- Shaders --
-- Release date --
-- Technology --
-- Direct X --
0 bytes Max. GPU Memory 0 bytes
-- Max. displays --
-- Execution units --
-- GPU frequency --
-- Generation --
-- GPU (Turbo) --
GPU name
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
-- VP8 --
-- VC-1 --
-- JPEG --
-- AV1 --
-- h265 / HEVC (8 bit) --
-- AVC --
-- h264 --
-- VP9 --
-- h265 / HEVC (10 bit) --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 4.0 TB distributed across 8 memory channels. It offers a peak memory bandwidth of 204.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
pci PCIe pci
Yes AES-NI Yes
DDR4-3200 Memory type DDR4-3200
Yes ECC Yes
0 bytes Max. Memory 4.0 TB
8 Memory channels 8
204.8 GB/s Bandwidth 204.8 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 225 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 240 W watts.
None TDP down 225 W
225 W TDP (PL1 / PBP) 240 W
-- Tjunction max --
 
 

Technical details

The AMD EPYC 7642 is manufactured using a 7 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 256.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD EPYC 7643 is manufactured using a 7 nm process.
Q3/2019 Release date Q1/2021
AMD-V, SVM Virtualization AMD-V, SVM
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2 ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
7 nm Technology 7 nm
Chiplet Chip design Chiplet
8000 $ Release price 4995 $
Rome (Zen 2) Architecture Milan (Zen 3)
256.0 MB L3-Cache 256.0 MB
Windows 10, Linux Operating systems Windows 10, Linux
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
SP3 Socket SP3
0 bytes L2-Cache 0 bytes
 
 

Benchmarks

Estimated results for PassMark CPU Mark

AMD EPYC 7643
48C 96T @ 2.3 GHz
76440
76440
AMD EPYC 7642
48C 96T @ 2.3 GHz
61574
61574

Geekbench 5, 64bit (Multi-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
36850
36850
AMD EPYC 7642
48C 96T @ 2.3 GHz
33846
33846

Geekbench 6 (Multi-Core)

AMD EPYC 7642
48C 96T @ 2.3 GHz
15647
15647
AMD EPYC 7643
48C 96T @ 2.3 GHz
14987
14987

Geekbench 6 (Single-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
1671
1671
AMD EPYC 7642
48C 96T @ 2.3 GHz
1334
1334

Geekbench 5, 64bit (Single-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
1319
1319
AMD EPYC 7642
48C 96T @ 2.3 GHz
1047
1047