AMD Radeon RX 640

AMD Radeon RX 640 Benchmark and Specs

AMD Radeon RX 640 GPU benchmark and specs - 4 GB AMD Radeon 600 Series Graphics card rating. How good is the Radeon RX 640 for gaming?

Benchmark Score

6 %
Bad score from 4 samples
Medium uncertainty
261st of 549
58th of 549
4 benchmarks

Quick compare

Search for a CPU to compare against or choose a popular comparison below.

GPU Comparison

The AMD Radeon RX 640 compared against popular alternatives. Compare against more GPUs with our GPU Comparison Tool.

NVIDIA GeForce RTX 3050
35 %
NVIDIA GeForce GTX 1650
22 %
NVIDIA GeForce GTX 1060
20 %
NVIDIA GeForce GTX 1050 Ti
14 %
AMD Radeon RX 550
8 %
AMD Radeon R7 260X
8 %
AMD Radeon RX 640
6 %

GPU benchmarks

Here are the performance results of this graphics card in both the hardwareDB Benchmark and other benchmark utilities. Synthetic tests are an estimation of real-world performance using consistent and repeatable benchmarks. All tests were performed at 1920 x 1080 resolution.

Flux Core

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

28 FPS average
17 FPS 10% low
11 FPS 1% low


Randomly generated noise sphere test

19 FPS average
15 FPS 10% low
8 FPS 1% low


Procedurally generated city scene with voxel rendering

25 FPS average
20 FPS 10% low
13 FPS 1% low


Real-time noise calculation and ray marching test

8 FPS average
8 FPS 10% low
6 FPS 1% low

Want to compare your GPU against the Radeon RX 640 and these results? Download our free and quick PC Performance Test.

Alternative benchmarks

Here are some benchmark results using alternative testing software

Geekbench 5 (OpenCL)

Geekbench 5 (OpenCL)

OpenCL compute benchmark

Geekbench 5 (Vulkan)

Geekbench 5 (Vulkan)

Vulkan compute benchmark

Geekbench 6 (OpenCL)

Geekbench 6 (OpenCL)

OpenCL compute benchmark

Geekbench 6 (Vulkan)

Geekbench 6 (Vulkan)

Vulkan compute benchmark


Compare these benchmarks and specs using our GPU Comparison Tool


Core Clock 1082 MHz
Boost Clock 1287 MHz
Memory Type GDDR5
Memory Size 4 GiB
Bus Width 64 bit
Memory Bandwidth 54.69 GB/s
TDP 50 W
Family Radeon 600 Series
DirectX Support 12
OpenGL Support 4.6
Pixel Rate 20.6 Gigapixels/s
Texture Rate 51.48 Gigatexels/s
Texture Mapping Units 40
Render Output Processors 16

AMD Radeon RX 640

The Radeon RX 640 is an AMD GPU. This GPU is bad at gaming with a score of 6% in our PC benchmark.

The Radeon RX 640 has 4 GiB of GDDR5 memory, with a total memory bandwidth of 54 GB/s. The memory bus has a width of 64 bits. If you plan on gaming at higher resolutions with higher quality textures, more memory is important. Without enough memory, performance will be degraded.

In terms of clock speed, the Radeon RX 640 GPU core runs at a frequency of 1082 MHz and if power and temperature permits, it can boost up to 1287 MHz. The clock runs at a speed called the clock speed. It dictates the number of updates per second that the GPU can process. Overclocking a chip, which means increasing the clock speed will improve the performance. However, thermals and power efficiency may be diminished.

As for rendering API support, the Radeon RX 640 supports up to DirectX 12. In addition, in cross-platform titles, OpenGL 4.6 features are supported. If your GPU is too old and doesn't support a newer API certain titles may not be playable.

The AMD Radeon RX 640 has a TDP of 50W, this is the amount of heat energy produced by the chip as a byproduct. The higher the TDP, the more heat is produced.

To figure out your graphics card specs and performance, download our free GPU Benchmark utility.


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