AMD Radeon R9 390 vs AMD Radeon RX 6400

Compare AMD Radeon R9 390 8 GB vs AMD Radeon RX 6400 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

1919 points

4% slightly better overall score

1845 points

Flux Core frame rate

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

44 FPS

2 FPS slightly higher Flux Core frame rate

42 FPS

Electron frame rate

Randomly generated noise sphere test

28 FPS

Identical

28 FPS

City frame rate

Procedurally generated city scene with voxel rendering

39 FPS

3 FPS slightly higher City frame rate

36 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

15 FPS

16 FPS

0 FPS slightly higher Clouds frame rate

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

3950 points

2338% significantly higher 3DMark Graphics score

162 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

43704 points

30% slightly higher Geekbench 6 (OpenCL) score

33586 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

51251 points

24% slightly higher Geekbench 6 (Vulkan) score

41105 points

Specifications

Core Clock Speed

Nominal chip frequency

1000 MHz

1923 MHz

92% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1000 MHz

2321 MHz

132% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

8 GiB

100% significantly more memory

4 GiB

Memory Bus Width

Number of parallel lines to the memory chips

512 Bit

700% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

384 GB/s

200% significantly higher memory bandwidth

128 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

275 W

53 W

418% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

64 Gigapixels/s

74.3 Gigapixels/s

16% slightly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

160 Gigatexels/s

43% significantly higher texture rate

111.4 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

5.12 TFLOPS

43% significantly better floating point performance

3.57 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2560

233% significantly more shading units

768

Texture Mapping Units

Number of processors dedicated to applying textures

160

233% significantly 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

215th of 586

217th of 586

Family

The product line

Radeon R9 300 Series

Radeon RX 6000 Series

Release date

The official date of release of this chip

2015 June

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

4.5

4.6

Radeon R9 390 vs Radeon RX 6400 specs and performance

According to the hardwareDB Benchmark, the Radeon R9 390 GPU is faster than the Radeon RX 6400 in gaming.

In our comparison, the Radeon RX 6400 has a significantly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. 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.

Next up, in terms of GPU memory, the Radeon R9 390 has significantly more memory with 8 GiB of memory compared to 4 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the Radeon RX 6400 has a significantly lower TDP at 53 W when compared to the Radeon R9 390 at 275 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

According to the results of the hardwareDB benchmark utility, the Radeon R9 390 is faster than the Radeon RX 6400.