AMD RX-421BD vs AMD Ryzen 9 PRO 5945

Last updated:

CPU comparison with benchmarks


AMD RX-421BD CPU1 vs CPU2 AMD Ryzen 9 PRO 5945
AMD RX-421BD AMD Ryzen 9 PRO 5945

CPU comparison

AMD RX-421BD or AMD Ryzen 9 PRO 5945 - 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 RX-421BD has 4 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. Up to GB of memory is supported in 2 memory channels. The AMD RX-421BD was released in Q4/2015.

The AMD Ryzen 9 PRO 5945 has 12 cores with 24 threads and clocks with a maximum frequency of 4.70 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The AMD Ryzen 9 PRO 5945 was released in Q3/2022.
AMD R (6) Family AMD Ryzen 5 (85)
AMD RX 1st Gen. (6) CPU group AMD Ryzen 5000U (13)
1 Generation 4
Merlin Falcon (Excavator) Architecture Cezanne (Zen 3)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD RX-421BD has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD RX-421BD is 2.10 GHz (3.40 GHz) while the AMD Ryzen 9 PRO 5945 has 12 CPU cores and 24 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 9 PRO 5945 is at 3.00 GHz (4.70 GHz).

AMD RX-421BD Characteristic AMD Ryzen 9 PRO 5945
4 Cores 12
4 Threads 24
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.10 GHz Frequency 3.00 GHz
3.40 GHz Turbo Frequency (1 Core) 4.70 GHz
-- Turbo Frequency (All Cores) --

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 RX-421BD Characteristic AMD Ryzen 9 PRO 5945
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD RX-421BD or AMD Ryzen 9 PRO 5945 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

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

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

Memory & PCIe

The AMD RX-421BD can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 38.4 GB/s. The AMD Ryzen 9 PRO 5945 supports up to 64 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 51.2 GB/s.

AMD RX-421BD Characteristic AMD Ryzen 9 PRO 5945
DDR4-2400, DDR3-2133 Memory LPDDR4-4266, DDR4-3200
Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC No
2.00 MB L2 Cache 6.00 MB
-- L3 Cache 64.00 MB
3.0 PCIe version 4.0
12 PCIe lanes --
11.8 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD RX-421BD is 35 W, while the AMD Ryzen 9 PRO 5945 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD RX-421BD Characteristic AMD Ryzen 9 PRO 5945
35 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
12 W TDP down --
90 °C Tjunction max. 95 °C

Technical details

The AMD RX-421BD is manufactured in 28 nm and has 2.00 MB cache. The AMD Ryzen 9 PRO 5945 is manufactured in 7 nm and has a 70.00 MB cache.

AMD RX-421BD Characteristic AMD Ryzen 9 PRO 5945
28 nm Technology 7 nm
Unknown Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
FP4 Socket AM4 (PGA 1331)
AMD-V, AMD-Vt Virtualization AMD-V, SVM
Yes AES-NI Yes
Operating systems Windows 10, Windows 11, Linux
Q4/2015 Release date Q3/2022
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD RX-421BD to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the AMD Ryzen 9 PRO 5945 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


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 RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
12C 24T @ 4.70 GHz
1613 (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 RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
12C 24T @ 3.00 GHz
9846 (100%)

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 RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
12C 24T @ 4.70 GHz
2119 (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 RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
12C 24T @ 3.00 GHz
8315 (100%)

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 RX-421BD AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz
820 (100%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
@ 0.00 GHz
0 (0%)

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 RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
AMD Ryzen 9 PRO 5945 AMD Ryzen 9 PRO 5945
12C 24T @ 3.00 GHz
34677 (100%)

Devices using this processor

AMD RX-421BD AMD Ryzen 9 PRO 5945
Unknown Unknown

Popular comparisons containing this CPUs

1. AMD Ryzen 9 PRO 5945AMD Ryzen 9 5950X AMD Ryzen 9 PRO 5945 vs AMD Ryzen 9 5950X
2. AMD Ryzen 9 PRO 5945AMD Ryzen 9 5900X AMD Ryzen 9 PRO 5945 vs AMD Ryzen 9 5900X
3. AMD Ryzen 9 PRO 5945Intel Core i7-13700K AMD Ryzen 9 PRO 5945 vs Intel Core i7-13700K
4. AMD Ryzen Embedded V1500BAMD RX-421BD AMD Ryzen Embedded V1500B vs AMD RX-421BD
5. AMD Ryzen 9 PRO 5945Intel Core i9-12900 AMD Ryzen 9 PRO 5945 vs Intel Core i9-12900
6. AMD Ryzen 9 7950XAMD Ryzen 9 PRO 5945 AMD Ryzen 9 7950X vs AMD Ryzen 9 PRO 5945
7. AMD Ryzen 5 5600GAMD RX-421BD AMD Ryzen 5 5600G vs AMD RX-421BD
8. AMD Ryzen 9 PRO 5945AMD Ryzen 5 5600G AMD Ryzen 9 PRO 5945 vs AMD Ryzen 5 5600G
9. AMD Ryzen 5 5600XAMD RX-421BD AMD Ryzen 5 5600X vs AMD RX-421BD
10. AMD RX-421BDApple M2 (8-GPU) AMD RX-421BD vs Apple M2 (8-GPU)


back to index