AMD EPYC 7643P vs Xeon E7420
We compared two server CPUs: AMD EPYC 7643P with 48 cores 2.3GHz and Xeon E7420 with 4 cores 2.133GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
AMD EPYC 7643P 's Advantages
Released 15 years late
Higher specification of memory (3200 vs 667)
Higher base frequency (2.3GHz vs 2.133GHz)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (7nm vs 45nm)
Xeon E7420 's Advantages
Lower TDP (90W vs 225W)
Score
General Parameters
Sep 2023
Release Date
Sep 2008
AMD
Manufacturer
Intel
Server
Type
Server
Milan
Core Architecture
Dunnington
AMD Socket SP3
Socket
Intel Socket 604
N/A
Integrated Graphics
On certain motherboards (Chipset feature)
EPYC (Zen 3 (Milan))
Generation
Xeon MP (Dunnington)
Package
33.2 billions
Transistor Count
1.9 billions
7 nm
Manufacturing Process
45 nm
225 W
Power Consumption
90 W
TSMC
Foundry
Intel
8x81 mm²
Die Size
503 mm²
12 nm
I/O Process Size
-
416 mm²
I/O Die Size
-
CPU Performance
2.3 GHz
Performance Core Base Frequency
2.133 GHz
3.6 GHz
Performance Core Turbo Frequency
0
48
Total Core Count
4
96
Total Thread Count
4
100 MHz
Bus Frequency
266 MHz
23.0
Multiplier
8.0
64 KB per core
L1 Cache
64 KB per core
512 KB per core
L2 Cache
3 MB per module
256 MB shared
L3 Cache
8 MB shared
No
Unlocked Multiplier
No
8
Cores per CCD
-
1
SMP
4
Memory Parameters
DDR4-3200
Memory Types
DDR2, DDR3-667
8
Max Memory Channels
4
Yes
ECC Memory Support
Yes
Miscellaneous
4
PCIe Version
0
128
PCIe Lanes
-
