AMD Ryzen Threadripper PRO 5945WX vs AMD RX-421BD

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CPU comparison with benchmarks


AMD Ryzen Threadripper PRO 5945WX CPU1 vs CPU2 AMD RX-421BD
AMD Ryzen Threadripper PRO 5945WX AMD RX-421BD

CPU comparison

In this CPU comparison, we compare the AMD Ryzen Threadripper PRO 5945WX and the AMD RX-421BD and use benchmarks to check which processor is faster.

We compare the AMD Ryzen Threadripper PRO 5945WX 12 core processor released in Q1/2022 with the AMD RX-421BD which has 4 CPU cores and was introduced in Q4/2015.
AMD Ryzen Threadripper PRO (15) Family AMD R (6)
AMD Ryzen Threadripper PRO 5000 (5) CPU group AMD RX 1st Gen. (6)
4 Generation 1
Chagall (Zen 3) Architecture Merlin Falcon (Excavator)
Desktop / Server Segment Mobile
AMD Ryzen Threadripper PRO 3945WX Predecessor --
AMD Ryzen Threadripper PRO 7945WX Successor --

CPU Cores and Base Frequency

The AMD Ryzen Threadripper PRO 5945WX is a 12 core processor with a clock frequency of 4.10 GHz (4.50 GHz). The processor can compute 24 threads at the same time. The AMD RX-421BD clocks with 2.10 GHz (3.40 GHz), has 4 CPU cores and can calculate 4 threads in parallel.

AMD Ryzen Threadripper PRO 5945WX Characteristic AMD RX-421BD
12 Cores 4
24 Threads 4
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
4.10 GHz Frequency 2.10 GHz
4.50 GHz Turbo Frequency (1 Core) 3.40 GHz
4.30 GHz Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

AMD Ryzen Threadripper PRO 5945WX Characteristic AMD RX-421BD
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU AMD Radeon R7 - 512 (Merlin Falcon)
GPU frequency 0.80 GHz
-- GPU (Turbo) --
-- GPU Generation 3
Technology 28
Max. displays 3
-- Compute units 8
-- Shader 512
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 12

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 AMD Radeon R7 - 512 (Merlin Falcon)
No Codec h265 / HEVC (8 bit) Decode
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG Decode

Memory & PCIe

Up to 2048 GB of memory in a maximum of 8 memory channels is supported by the AMD Ryzen Threadripper PRO 5945WX, while the AMD RX-421BD supports a maximum of GB of memory with a maximum memory bandwidth of 38.4 GB/s enabled.

AMD Ryzen Threadripper PRO 5945WX Characteristic AMD RX-421BD
DDR4-3200 Memory DDR4-2400, DDR3-2133
2048 GB Max. Memory
8 (Octa Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 38.4 GB/s
Yes ECC Yes
6.00 MB L2 Cache 2.00 MB
64.00 MB L3 Cache --
4.0 PCIe version 3.0
128 PCIe lanes 12
252.0 GB/s PCIe Bandwidth 11.8 GB/s

Thermal Management

The AMD Ryzen Threadripper PRO 5945WX has a TDP of 280 W. The TDP of the AMD RX-421BD is 35 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen Threadripper PRO 5945WX Characteristic AMD RX-421BD
280 W TDP (PL1 / PBP) 35 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 12 W
95 °C Tjunction max. 90 °C

Technical details

The AMD Ryzen Threadripper PRO 5945WX has 70.00 MB cache and is manufactured in 7 nm. The cache of AMD RX-421BD is at 2.00 MB. The processor is manufactured in 28 nm.

AMD Ryzen Threadripper PRO 5945WX Characteristic AMD RX-421BD
7 nm Technology 28 nm
Chiplet Chip design Unknown
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, AVX, FMA3, FMA4
WRX8 (sWRX8) Socket FP4
AMD-V, SVM Virtualization AMD-V, AMD-Vt
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems
Q1/2022 Release date Q4/2015
-- Release price --
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Rate these processors

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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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.50 GHz
1508 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)

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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.50 GHz
1604 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)

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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.30 GHz
15324 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)

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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.50 GHz
2054 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)

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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.30 GHz
13824 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.50 GHz
585 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
AMD Ryzen Threadripper PRO 5945WX AMD Ryzen Threadripper PRO 5945WX
@ 0.00 GHz
0 (0%)
AMD RX-421BD AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz
820 (100%)

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 5945WX AMD Ryzen Threadripper PRO 5945WX
12C 24T @ 4.30 GHz
40810 (100%)
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)

Devices using this processor

AMD Ryzen Threadripper PRO 5945WX AMD RX-421BD
Unknown Unknown

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