AMD Ryzen Threadripper PRO 9955WX vs AMD EPYC 7251
AMD Ryzen Threadripper PRO 9955WX
AMD EPYC 7251
|
16 Cores
32 Threads
4.5GHz Clock
|
8 Cores
16 Threads
2.1GHz Clock
|
|
Socket
sTR5
|
Socket
SP3
|
|
iGPU
No GPU
- -
|
iGPU
No GPU
- -
|
|
GB6S N/A
0%
|
GB6S 740
18%
|
|
GB6M N/A
0%
|
GB6M 3,900
15%
|
|
CB23S N/A
0%
|
CB23S N/A
0%
|
|
CB23M N/A
0%
|
CB23M N/A
0%
|
|
Manufacturer
AMD
|
Manufacturer
AMD
|
|
Architecture
Zen 5
|
Architecture
Zen
|
|
Family
Ryzen 9000
|
Family
EPYC 7001
|
|
Instruction Set (ISA)
x86-64
|
Instruction Set (ISA)
x86-64
|
|
Codename
Shimada Peak
Eldora
Shimada Peak 2CCD
-
-
-
-
-
-
|
Codename
Naples
Zeppelin
-
-
-
-
-
-
-
|
|
Market Segment
Server
|
Market Segment
Server
|
|
Release Date
5/20/2025
|
Release Date
6/1/2017
|
|
Foundry
TSMC
TSMC (IO Die)
-
-
|
Foundry
GlobalFoundries
0 (null Die)
-
-
|
|
Node
N4X
N6 (IO Die)
-
-
|
Node
14LP
-
-
-
|
|
Die Size
2x 71 mm²
388 mm² (IO Die)
-
-
|
Die Size
4x 213 mm²
-
-
-
|
|
Transistor Count
2x 8.3 Billion
11 Billion (IO Die)
-
-
|
Transistor Count
4x 4.8 Billion
-
-
-
|
|
16 Cores
-
-
-
|
8 Cores
-
-
-
|
|
32 Threads
-
-
-
|
16 Threads
-
-
-
|
|
-
4.5GHz
5.4GHz Boost
-
|
-
2.1GHz
3GHz Boost
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
Overclocking
Unlocked
-
-
-
|
Overclocking
Locked
-
-
-
|
|
Type
PCIe
|
Type
PCIe
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
Transfer Rate
32GT/s
|
Transfer Rate
8GT/s
|
|
-
-
|
-
-
|
|
Lanes
8
|
Lanes
4
|
|
Bandwidth
32GB/s
|
Bandwidth
4GB/s
|
|
Bi-directional
64GB/s
|
Bi-directional
8GB/s
|
|
L0 Instruction
-
-
|
L0 Instruction
-
-
|
|
L0 Data
-
-
|
L0 Data
-
-
|
|
L1 Instruction
32KB/Core
8-way set associative
-
-
-
-
|
L1 Instruction
64KB/Core
4-way set associative
-
-
-
-
|
|
L1 Data
48KB/Core
12-way set associative
-
-
-
-
|
L1 Data
32KB/Core
8-way set associative
-
-
-
-
|
|
L2
1024KB/Core
16-way set associative
-
-
-
-
-
-
-
-
-
-
|
L2
512KB/Core
8-way set associative
-
-
-
-
-
-
-
-
-
-
|
|
L3
-
64MB Shared
-
16-way set associative
-
-
-
-
-
|
L3
-
32MB Shared
-
16-way set associative
-
-
-
-
-
|
|
-
-
-
-
|
-
-
-
-
|
|
Channels
12
|
Channels
8
|
|
Max Memory
6144GB
|
Max Memory
64GB
|
|
ECC
Supported
|
ECC
Supported
|
|
Bus Width/Channel
64Bit
Bus Width
768Bit
|
Bus Width/Channel
64Bit
Bus Width
512Bit
|
|
Clock
3000MHz
Transfer Rate
6000MT/s
|
Clock
1200MHz
Transfer Rate
2400MT/s
|
|
Bandwidth/Channel
48.0GB/s
Bandwidth
576.0GB/s
|
Bandwidth/Channel
19.2GB/s
Bandwidth
153.6GB/s
|
|
TDP
350W
-
-
-
|
TDP
120W
-
-
-
|
|
Temp
95°C Max
-
|
-
-
-
|
|
Included Cooler
Not Included
|
Included Cooler
Not Included
|
|
PCIe 5.0 x128 Lanes
|
PCIe 4.0 x128 Lanes
|
|
No GPU
-
-
- -
|
No GPU
-
-
- -
|
|
No NPU
-
|
No NPU
-
|
|
-
-
|
-
-
|
|
-
|
-
|
|
-
-
|
-
-
|
|
No Cellular
|
No Cellular
|
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