AMD Radeon R9 390 vs AMD Radeon RX 6600 XT

Compare AMD Radeon R9 390 8 GB vs AMD Radeon RX 6600 XT 8 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

5600 points

191% significantly better overall score

Flux Core frame rate

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

44 FPS

116 FPS

71 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

28 FPS

85 FPS

57 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

39 FPS

102 FPS

63 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

15 FPS

49 FPS

33 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

3950 points

9727 points

146% significantly higher 3DMark Graphics score

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

46328 points

82559 points

78% significantly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

49594 points

64460 points

29% slightly higher Geekbench 5 (Vulkan) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

43704 points

82739 points

89% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

51251 points

93271 points

81% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1000 MHz

1968 MHz

96% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1000 MHz

2589 MHz

158% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

8 GiB

Identical

8 GiB

Memory Bus Width

Number of parallel lines to the memory chips

512 Bit

300% significantly larger memory bus width

128 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

384 GB/s

49% significantly higher memory bandwidth

256 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

275 W

160 W

71% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

64 Gigapixels/s

165.7 Gigapixels/s

158% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

160 Gigatexels/s

331.4 Gigatexels/s

107% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

5.12 TFLOPS

10.6 TFLOPS

107% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

2560

25% slightly more shading units

2048

Texture Mapping Units

Number of processors dedicated to applying textures

160

25% slightly more texture mapping units

128

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

215th of 586

90th 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

2021 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 6600 XT comparison

In our benchmarks, the Radeon RX 6600 XT beats the Radeon R9 390 in gaming performance.

In our comparison, the Radeon RX 6600 XT 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 6600 XT 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 8 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the Radeon RX 6600 XT has a significantly lower TDP at 160 W when compared to the Radeon R9 390 at 275 W. TDP (Thermal Design Power) measures total heat output from the chip.

According to the results of the hardwareDB benchmark utility, the Radeon RX 6600 XT is faster than the Radeon R9 390.