AMD Radeon RX 550 vs AMD Radeon RX 640

Compare AMD Radeon RX 550 4 GB vs AMD Radeon RX 640 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Other Benchmarks
Specifications
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AMD Radeon RX 640

Price

The cheapest price from our partner retailers

$ 225.00

$ 199.99

$ 25.01 slightly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

621 points

11% slightly better overall score

556 points

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

15 FPS

2 FPS slightly higher Flux Core frame rate

14 FPS

Electron frame rate

Randomly generated noise sphere test

14 FPS

4 FPS significantly higher Electron frame rate

9 FPS

City frame rate

Procedurally generated city scene with voxel rendering

16 FPS

4 FPS significantly higher City frame rate

13 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

10 FPS

6 FPS significantly higher Clouds frame rate

4 FPS

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

14002 points

15883 points

13% slightly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

15900 points

0.26% slightly higher Geekbench 5 (Vulkan) score

15859 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

12342 points

14348 points

16% slightly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

16237 points

16397 points

0.99% slightly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1100 MHz

1% slightly higher core clock speed

1082 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1183 MHz

1287 MHz

8% slightly higher boost clock speed

Memory

Onboard memory size for textures and vertices

4 GiB

Identical

4 GiB

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

100% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

112 GB/s

100% significantly higher memory bandwidth

56 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

50 W

Identical

50 W

Pixel Rate

Number of pixels that can be rendered per second

18.93 Gigapixels/s

20.6 Gigapixels/s

8% slightly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

37.86 Gigatexels/s

51.48 Gigatexels/s

35% slightly higher texture rate

Texture Mapping Units

Number of processors dedicated to applying textures

25% slightly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

306th of 586

318th of 586

Family

The product line

Radeon RX 500 Series

Radeon 600 Series

Release date

The official date of release of this chip

2017 April

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.5

4.6

Radeon RX 550 vs Radeon RX 640 benchmarks

In our benchmarks, the Radeon RX 550 beats the Radeon RX 640 in gaming performance.

The Radeon RX 550 has a slightly higher core clock speed. The core clock speed (or base speed) is the frequency at which the GPU core runs. This metric makes sense when comparing GPUs of a similar architecture or generation. Despite this, the Radeon RX 640 has a slightly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

Furthermore, the spec sheet for both these GPUs show that they both have the same amount of memory at 4 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, both the Radeon RX 550 and the Radeon RX 640 have an identical TDP. TDP (Thermal Design Power) measures total heat output from the chip.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon RX 550 over the Radeon RX 640.