AMD EPYC 7643P vs Opteron 6281
We compared two server CPUs: AMD EPYC 7643P with 48 cores 2.3GHz and Opteron 6281 with 16 cores 2.5GHz . 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 11 years and 4 months late
Higher specification of memory (3200 vs 1600)
Newer PCIe version (4 vs 2)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (7nm vs 32nm)
Opteron 6281 's Advantages
Higher base frequency (2.5GHz vs 2.3GHz)
Lower TDP (130W vs 225W)
Score
General Parameters
Sep 2023
Release Date
May 2012
AMD
Manufacturer
AMD
Server
Type
Server
Milan
Core Architecture
Interlagos
AMD Socket SP3
Socket
AMD Socket G34
N/A
Integrated Graphics
N/A
EPYC (Zen 3 (Milan))
Generation
Opteron (Interlagos)
Package
33.2 billions
Transistor Count
2.4 billions
7 nm
Manufacturing Process
32 nm
225 W
Power Consumption
130 W
TSMC
Foundry
GlobalFoundries
8x81 mm²
Die Size
2x315 mm²
12 nm
I/O Process Size
-
416 mm²
I/O Die Size
-
CPU Performance
2.3 GHz
Performance Core Base Frequency
2.5 GHz
3.6 GHz
Performance Core Turbo Frequency
3.2 GHz
48
Total Core Count
16
96
Total Thread Count
16
100 MHz
Bus Frequency
200 MHz
23.0
Multiplier
12.5
64 KB per core
L1 Cache
768 KB
512 KB per core
L2 Cache
2 MB per module
256 MB shared
L3 Cache
8 MB per die
No
Unlocked Multiplier
No
8
Cores per CCD
-
1
SMP
4
Memory Parameters
DDR4-3200
Memory Types
DDR3-1600
8
Max Memory Channels
4
Yes
ECC Memory Support
Yes
Miscellaneous
4
PCIe Version
2
128
PCIe Lanes
-
