AMD Radeon RX 640 vs AMD Radeon RX 6400

Compare AMD Radeon RX 640 4 GB vs AMD Radeon RX 6400 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Other Benchmarks
Specifications
Comments (0)
Popular Comparisons

GPU Comparison

Quickly search and compare graphics cards

AMD Radeon RX 6400

Price

The cheapest price from our partner retailers

$ 199.99

$ 130.03

$ 69.96 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

556 points

1845 points

231% significantly better overall score

Flux Core frame rate

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

14 FPS

42 FPS

28 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

9 FPS

28 FPS

19 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

13 FPS

36 FPS

24 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

4 FPS

16 FPS

12 FPS significantly higher Clouds frame rate

Free GPU Benchmark

Want to compare your graphics card against the Radeon RX 640 and the Radeon RX 6400? Download our free and quick PC Performance Test.

Download GPU Benchmark

Other Benchmarks

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

14348 points

33586 points

134% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

16397 points

41105 points

150% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1082 MHz

1923 MHz

77% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1287 MHz

2321 MHz

80% significantly 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

64 Bit

Identical

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

56 GB/s

128 GB/s

128% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

50 W

6% slightly lower TDP

53 W

Pixel Rate

Number of pixels that can be rendered per second

20.6 Gigapixels/s

74.3 Gigapixels/s

260% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

51.48 Gigatexels/s

111.4 Gigatexels/s

116% significantly higher texture rate

Texture Mapping Units

Number of processors dedicated to applying textures

20% slightly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

318th of 586

217th of 586

Family

The product line

Radeon 600 Series

Radeon RX 6000 Series

Release date

The official date of release of this chip

2022 January

Memory Type

The type of memory used by this chip

GDDR5

GDDR6

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

Radeon RX 640 vs Radeon RX 6400 comparison

According to the hardwareDB Benchmark, the Radeon RX 6400 GPU is faster than the Radeon RX 640 in gaming.

The Radeon RX 6400 has a significantly 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. In addition, the Radeon RX 6400 also has a significantly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

As stated by the manufacturer, they both have the same amount of memory at 4 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the Radeon RX 640 has a slightly lower TDP at 50 W when compared to the Radeon RX 6400 at 53 W. Heat output doesn't match power consumption directly but, it's a good estimate.

In terms of raw gaming performance in our GPU benchmark, the Radeon RX 6400 is better than the Radeon RX 640.