AMD EPYC 9255 vs Xeon 6556P B
We compared two server CPUs: AMD EPYC 9255 with 24 cores 3.25GHz and Xeon 6556P B with 36 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
AMD EPYC 9255 's Advantages
Higher base frequency (3.25GHz vs 2.3GHz)
More modern manufacturing process (4nm vs 5nm)
Lower TDP (200W vs 215W)
Xeon 6556P B 's Advantages
Higher specification of memory (6400 vs 6000)
Larger L3 cache size (144MB vs 128MB)
Score
General Parameters
Oct 2024
Release Date
Feb 2025
AMD
Manufacturer
Intel
Server
Type
Server
Turin
Core Architecture
Granite Rapids
AMD Socket SP5
Socket
Intel BGA 4368
N/A
Integrated Graphics
N/A
EPYC(Zen 5 (Turin))
Generation
Xeon 6 (Granite Rapids-D)
Package
33.26 billions
Transistor Count
-
4 nm
Manufacturing Process
5 nm
200 W
Power Consumption
215 W
TSMC
Foundry
Intel
4x70.6 mm²
Die Size
598 mm²
6 nm
I/O Process Size
10 nm
mm²
I/O Die Size
-
CPU Performance
24
Performance Cores
-
48
Performance Core Threads
-
3.25 GHz
Performance Core Base Frequency
2.3 GHz
4.8 GHz
Performance Core Turbo Frequency
3.5 GHz
24
Total Core Count
36
48
Total Thread Count
72
100 MHz
Bus Frequency
100 MHz
32.5
Multiplier
23.0
80 KB per core
L1 Cache
112 KB per core
1 MB per core
L2 Cache
2 MB per core
128 MB shared
L3 Cache
144 MB shared
No
Unlocked Multiplier
No
2
SMP
2
-
AVX-512 FMA Ports
2
Memory Parameters
DDR5-6000
Memory Types
DDR5-6400
6 TB
Max Memory Size
1.13 TB
12
Max Memory Channels
4
576 GB/s
Max Memory Bandwidth
-
Yes
ECC Memory Support
Yes
