AMD EPYC 7402P vs AMD EPYC 7643

Compare AMD EPYC 7002 Series 24 core CPU vs AMD EPYC 7003 Series 48 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

103 %
0% slightly better overall score
102 %

Gaming Score

The raw gaming performance with a fast GPU

55 %
7% slightly better gaming score
51 %

Multitasking Score

Performance in workloads using up to 8 cores

122 %
123 %
0% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

133 %
136 %
2% slightly better heavy workload score

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Number of physical processing units

100% significantly more cores


Number of logical processing units

100% significantly more threads

Clock Speed

Base frequency at which the chip operates

3 GHz
21% slightly higher clock speed
2 GHz

Turbo Speed

Higher frequency used for heavy workloads

3 GHz
4 GHz
7% slightly higher turbo speed


Thermal Design Power: Measure of heat generated by the CPU

180 W
25% slightly lower TDP
225 W

Memory Channels

Lanes for simultaneous memory access


L1 Cache

Smallest embedded memory, but the fastest

2,304 KiB
3,072 KiB
33% slightly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

12 MiB
24 MiB
100% significantly more L2 cache

L3 Cache

General memory pool for all cores

128 MiB
256 MiB
100% significantly more L3 cache

Other details


Ranking in the hardwareDB database

39th of 1,327
43rd of 1,327


The product line

EPYC 7002 Series
EPYC 7003 Series

Release date

The official date of release of this chip

August 2019
March 2021

Memory Type

The type of memory used by this chip


Is Unlocked

Can this CPU can be overclocked


EPYC 7402P vs EPYC 7643 comparison

Our benchmark analysis concludes that the EPYC 7402P performs better than the EPYC 7643. Furthermore, our gaming benchmark shows that it also outperforms the EPYC 7643 in all gaming tests too.

With info from our database, we find that the EPYC 7643 has significantly more cores with 48 cores whereas the EPYC 7402P has 24 cores. It also has more threads than the EPYC 7402P. Our comparison shows that the EPYC 7402P has a slightly higher clock speed compared to the EPYC 7643. Despite this, the EPYC 7643 has a slightly higher turbo speed. A EPYC 7402P CPU outputs less heat than a EPYC 7643 CPU because of its slightly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the EPYC 7643 has significantly more L2 cache than the EPYC 7402P. The EPYC 7643 also has significantly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the EPYC 7402P has more threads than cores. Each physical core is split into multiple threads.


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