AMD Radeon R9 390 vs AMD Radeon RX 6800

Compare AMD Radeon R9 390 8 GB vs AMD Radeon RX 6800 16 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Benchmark Score

Overall Score

General gaming and workstation score

1919 points

9568 points

398% significantly better overall score

Flux Core frame rate

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

44 FPS

196 FPS

151 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

28 FPS

143 FPS

115 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

39 FPS

173 FPS

134 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

15 FPS

83 FPS

68 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

3950 points

16155 points

308% significantly higher 3DMark Graphics score

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

46328 points

130322 points

181% significantly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

49594 points

93163 points

87% significantly higher Geekbench 5 (Vulkan) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

43704 points

130005 points

197% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

51251 points

133046 points

159% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1000 MHz

1815 MHz

81% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1000 MHz

2105 MHz

110% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

8 GiB

16 GiB

100% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

512 Bit

100% significantly larger memory bus width

256 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

384 GB/s

512 GB/s

33% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

275 W

250 W

10% slightly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

64 Gigapixels/s

202.1 Gigapixels/s

215% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

160 Gigatexels/s

505.2 Gigatexels/s

215% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

5.12 TFLOPS

16.17 TFLOPS

215% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

2560

3840

49% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

160

240

49% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

49% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

215th of 586

41st 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

2020 November

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 6800 comparison

In our benchmarks, the Radeon RX 6800 beats the Radeon R9 390 in gaming performance.

In our comparison, the Radeon RX 6800 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 6800 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 RX 6800 has significantly more memory with 16 GiB of memory compared to 8 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the Radeon RX 6800 has a slightly lower TDP at 250 W when compared to the Radeon R9 390 at 275 W. TDP (Thermal Design Power) measures total heat output from the chip.

In terms of raw gaming performance in our GPU benchmark, the Radeon RX 6800 is better than the Radeon R9 390.