AMD Radeon RX 6600 XT vs AMD Radeon RX 7900 XT

Compare AMD Radeon RX 6600 XT 8 GB vs AMD Radeon RX 7900 XT 20 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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AMD Radeon RX 7900 XT

Price

The cheapest price from our partner retailers

$ 369.99

$ 310.00 significantly less expensive

$ 679.99

Benchmark Score

Overall Score

General gaming and workstation score

5600 points

19220 points

243% significantly better overall score

Flux Core frame rate

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

116 FPS

393 FPS

277 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

85 FPS

273 FPS

188 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

102 FPS

362 FPS

260 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

49 FPS

158 FPS

109 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

9727 points

73% significantly higher 3DMark Graphics score

5616 points

Blender score

Cycles Render (Samples per minute)

1068.60 points

3540.90 points

231% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

82739 points

187759 points

126% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

93271 points

213258 points

128% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1968 MHz

9% slightly higher core clock speed

1800 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2589 MHz

7% slightly higher boost clock speed

2400 MHz

Memory

Onboard memory size for textures and vertices

8 GiB

20 GiB

150% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

384 Bit

200% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

256 GB/s

800 GB/s

212% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

160 W

96% significantly lower TDP

315 W

Pixel Rate

Number of pixels that can be rendered per second

165.7 Gigapixels/s

460 Gigapixels/s

177% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

331.4 Gigatexels/s

810 Gigatexels/s

144% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

10.6 TFLOPS

54.07 TFLOPS

410% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

2048

12288

499% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

128

768

499% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

192

200% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

90th of 586

10th of 586

Family

The product line

Radeon RX 6000 Series

Radeon RX 7000 Series

Release date

The official date of release of this chip

2021 November

2022 December

Memory Type

The type of memory used by this chip

GDDR6

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

Radeon RX 6600 XT vs Radeon RX 7900 XT benchmarks

According to the hardwareDB Benchmark, the Radeon RX 7900 XT GPU is faster than the Radeon RX 6600 XT in gaming.

The Radeon RX 6600 XT has a slightly 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 slightly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

Furthermore, the spec sheet for both these GPUs show that the Radeon RX 7900 XT has significantly more memory with 20 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 6600 XT has a significantly lower TDP at 160 W when compared to the Radeon RX 7900 XT at 315 W. Heat output doesn't match power consumption directly but, it's a good estimate.

According to the results of the hardwareDB benchmark utility, the Radeon RX 7900 XT is faster than the Radeon RX 6600 XT.