AMD Ryzen Threadripper PRO 3975WX vs AMD Ryzen Threadripper PRO 3955WX

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CPU comparison with benchmarks


AMD Ryzen Threadripper PRO 3975WX CPU1 vs CPU2 AMD Ryzen Threadripper PRO 3955WX
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3955WX

CPU comparison

AMD Ryzen Threadripper PRO 3975WX or AMD Ryzen Threadripper PRO 3955WX - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD Ryzen Threadripper PRO 3975WX has 32 cores with 64 threads and clocks with a maximum frequency of 4.20 GHz. Up to 2048 GB of memory is supported in 8 memory channels. The AMD Ryzen Threadripper PRO 3975WX was released in Q3/2020.

The AMD Ryzen Threadripper PRO 3955WX has 16 cores with 32 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 2048 GB of memory in 8 memory channels. The AMD Ryzen Threadripper PRO 3955WX was released in Q1/2021.
AMD Ryzen Threadripper PRO (15) Family AMD Ryzen Threadripper PRO (15)
AMD Ryzen Threadripper PRO 3000 (4) CPU group AMD Ryzen Threadripper PRO 3000 (4)
3 Generation 3
Castle Peak (Zen 2) Architecture Castle Peak (Zen 2)
Desktop / Server Segment Desktop / Server
-- Predecessor --
AMD Ryzen Threadripper PRO 5975WX Successor AMD Ryzen Threadripper PRO 5955WX

CPU Cores and Base Frequency

The AMD Ryzen Threadripper PRO 3975WX is a 32 core processor with a clock frequency of 3.50 GHz (4.20 GHz). The AMD Ryzen Threadripper PRO 3955WX has 16 CPU cores with a clock frequency of 3.90 GHz (4.30 GHz).

AMD Ryzen Threadripper PRO 3975WX Characteristic AMD Ryzen Threadripper PRO 3955WX
32 Cores 16
64 Threads 32
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.50 GHz Frequency 3.90 GHz
4.20 GHz Turbo Frequency (1 Core) 4.30 GHz
3.75 GHz Turbo Frequency (All Cores) 4.00 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AMD Ryzen Threadripper PRO 3975WX Characteristic AMD Ryzen Threadripper PRO 3955WX
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The AMD Ryzen Threadripper PRO 3975WX supports a maximum of 2048 GB of memory in 8 memory channels. The AMD Ryzen Threadripper PRO 3955WX can connect up to 2048 GB of memory in 8 memory channels.

AMD Ryzen Threadripper PRO 3975WX Characteristic AMD Ryzen Threadripper PRO 3955WX
DDR4-3200 Memory DDR4-3200
2048 GB Max. Memory 2048 GB
8 (Octa Channel) Memory channels 8 (Octa Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC Yes
16.00 MB L2 Cache 8.00 MB
128.00 MB L3 Cache 64.00 MB
4.0 PCIe version 4.0
128 PCIe lanes 128
252.0 GB/s PCIe Bandwidth 252.0 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen Threadripper PRO 3975WX has a TDP of 280 W, that of the AMD Ryzen Threadripper PRO 3955WX is 280 W.

AMD Ryzen Threadripper PRO 3975WX Characteristic AMD Ryzen Threadripper PRO 3955WX
280 W TDP (PL1 / PBP) 280 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
95 °C Tjunction max. 95 °C

Technical details

The AMD Ryzen Threadripper PRO 3975WX has a 144.00 MB cache, while the AMD Ryzen Threadripper PRO 3955WX cache has a total of 72.00 MB.

AMD Ryzen Threadripper PRO 3975WX Characteristic AMD Ryzen Threadripper PRO 3955WX
7 nm Technology 7 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
WRX8 (sWRX8) Socket WRX8 (sWRX8)
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q3/2020 Release date Q1/2021
2749 $ Release price 1149 $
show more data show more data


Rate these processors

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Here you can rate the AMD Ryzen Threadripper PRO 3955WX to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
1260 (96%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1310 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
25211 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
15679 (62%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
1627 (98%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1656 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
15273 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
13740 (90%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
62990 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
44270 (70%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.50 GHz
20747 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 3.90 GHz
10843 (52%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
75 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
2504 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
1276 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
42986 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
509 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
16740 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
680 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz
209 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz
7575 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

Devices using this processor

AMD Ryzen Threadripper PRO 3975WX AMD Ryzen Threadripper PRO 3955WX
Unknown Unknown

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