AMD EPYC 7643 vs AMD EPYC 7402
We compared two server CPUs: AMD EPYC 7643 with 48 cores 2.3GHz and AMD EPYC 7402 with 24 cores 2.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
AMD EPYC 7643 's Advantages
Released 1 years and 7 months late
Larger L3 cache size (256MB vs 128MB)
AMD EPYC 7402 's Advantages
Higher base frequency (2.8GHz vs 2.3GHz)
Lower TDP (180W vs 225W)
Score
Benchmark
Geekbench 6 Single Core
AMD EPYC 7643
+31%
1696
AMD EPYC 7402
1292
Geekbench 6 Multi Core
AMD EPYC 7643
9939
AMD EPYC 7402
+7%
10637
General Parameters
Mar 2021
Release Date
Aug 2019
AMD
Manufacturer
AMD
Server
Type
Server
-
-
-
Milan
Core Architecture
Rome
-
-
-
AMD Socket SP3
Socket
AMD Socket SP3
N/A
Integrated Graphics
N/A
EPYC (Zen 3 (Milan))
Generation
EPYC (Zen 2 (Rome))
Package
33.2 billions
Transistor Count
3.8 billions
7 nm
Manufacturing Process
7 nm
-
-
-
225 W
Power Consumption
180 W
-
-
-
-
-
-
TSMC
Foundry
TSMC
8x81 mm²
Die Size
74 mm²
12 nm
I/O Process Size
-
416 mm²
I/O Die Size
-
-
-
-
CPU Performance
-
-
-
-
-
-
2.3 GHz
Performance Core Base Frequency
2.8 GHz
3.6 GHz
Performance Core Turbo Frequency
3.35 GHz
-
-
-
-
-
-
-
-
-
-
-
-
48
Total Core Count
24
96
Total Thread Count
48
100 MHz
Bus Frequency
100 MHz
23.0
Multiplier
28.0
-
-
-
64 KB per core
L1 Cache
96 K per core
512 KB per core
L2 Cache
512 K per core
256 MB shared
L3 Cache
128 MB shared
No
Unlocked Multiplier
No
CCDs
6
Cores per CCD
-
2
SMP
2
-
-
-
-
-
-
Memory Parameters
DDR4-3200
Memory Types
DDR4-3200
-
-
-
8
Max Memory Channels
8
-
-
-
Yes
ECC Memory Support
Yes
Graphics Card Parameters
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AI Accelerator
-
-
-
-
-
-
Miscellaneous
-
-
-
4
PCIe Version
4
128
PCIe Lanes
-
-
-
-
-
