AMD Radeon R9 390X vs AMD Radeon RX 6600

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

65 points

4302 points

6518% significantly better overall score

Flux Core frame rate

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

25 FPS

86 FPS

62 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

23 FPS

65 FPS

42 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

30 FPS

78 FPS

48 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

14 FPS

37 FPS

23 FPS significantly higher Clouds frame rate

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

4254 points

8131 points

91% significantly higher 3DMark Graphics score

Specifications

Core Clock Speed

Nominal chip frequency

1050 MHz

1626 MHz

54% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1050 MHz

2491 MHz

137% 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

71% significantly higher memory bandwidth

224 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

275 W

132 W

108% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

67.2 Gigapixels/s

159.4 Gigapixels/s

137% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

184.8 Gigatexels/s

279 Gigatexels/s

50% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

5.91 TFLOPS

8.93 TFLOPS

50% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

2816

57% significantly more shading units

1792

Texture Mapping Units

Number of processors dedicated to applying textures

176

57% significantly more texture mapping units

112

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

530th of 586

117th 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 October

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 390X vs Radeon RX 6600 benchmarks

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

In our comparison, the Radeon RX 6600 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 also has a significantly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

Furthermore, the spec sheet for both these GPUs show that 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 has a significantly lower TDP at 132 W when compared to the Radeon R9 390X at 275 W. TDP (Thermal Design Power) measures total heat output from the chip.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon RX 6600 over the Radeon R9 390X.