AMD EPYC 7643 vs Xeon E5462
We compared two server CPUs: AMD EPYC 7643 with 48 cores 2.3GHz and Xeon E5462 with 4 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 13 years and 4 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 2)
More modern manufacturing process (7nm vs 45nm)
Xeon E5462 's Advantages
Higher base frequency (2.8GHz vs 2.3GHz)
Lower TDP (80W vs 225W)
Score
Benchmark
Geekbench 6 Single Core
AMD EPYC 7643
+380%
1696
Xeon E5462
353
Geekbench 6 Multi Core
AMD EPYC 7643
+909%
9939
Xeon E5462
985
General Parameters
Mar 2021
Release Date
Nov 2007
AMD
Manufacturer
Intel
Server
Type
Server
Milan
Core Architecture
Harpertown
AMD Socket SP3
Socket
Intel Socket 771
N/A
Integrated Graphics
N/A
EPYC (Zen 3 (Milan))
Generation
Xeon (Harpertown)
Package
33.2 billions
Transistor Count
0.82 billions
7 nm
Manufacturing Process
45 nm
225 W
Power Consumption
80 W
TSMC
Foundry
Intel
8x81 mm²
Die Size
2x107 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
0
48
Total Core Count
4
96
Total Thread Count
4
100 MHz
Bus Frequency
400 MHz
23.0
Multiplier
7.0
64 KB per core
L1 Cache
64 KB per core
512 KB per core
L2 Cache
6 MB per die
256 MB shared
L3 Cache
-
No
Unlocked Multiplier
No
6
Cores per CCD
-
2
SMP
2
Memory Parameters
DDR4-3200
Memory Types
DDR2, DDR3
Depends on motherboard
8
Max Memory Channels
2
Yes
ECC Memory Support
Yes
Miscellaneous
4
PCIe Version
2
128
PCIe Lanes
-
