AMD Radeon RX 6600 vs NVIDIA GeForce GTX 660M

Compare AMD Radeon RX 6600 8 GB vs NVIDIA GeForce GTX 660M 2 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

4302 points

1829% significantly better overall score

223 points

Flux Core frame rate

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

86 FPS

81 FPS significantly higher Flux Core frame rate

5 FPS

Electron frame rate

Randomly generated noise sphere test

65 FPS

62 FPS significantly higher Electron frame rate

3 FPS

City frame rate

Procedurally generated city scene with voxel rendering

78 FPS

74 FPS significantly higher City frame rate

3 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

37 FPS

34 FPS significantly higher Clouds frame rate

2 FPS

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (Metal) score

Metal compute benchmark

75685 points

3533% significantly higher Geekbench 5 (Metal) score

2083 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

76157 points

1987% significantly higher Geekbench 5 (OpenCL) score

3649 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

61842 points

1654% significantly higher Geekbench 5 (Vulkan) score

3524 points

Geekbench 6 (Metal) score

Metal compute benchmark

100044 points

4400% significantly higher Geekbench 6 (Metal) score

2223 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

73158 points

1733% significantly higher Geekbench 6 (OpenCL) score

3991 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

86589 points

2357% significantly higher Geekbench 6 (Vulkan) score

3524 points

Specifications

Core Clock Speed

Nominal chip frequency

1626 MHz

71% significantly higher core clock speed

950 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2491 MHz

162% significantly higher boost clock speed

950 MHz

Memory

Onboard memory size for textures and vertices

8 GiB

300% significantly more memory

2 GiB

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

Identical

128 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

224 GB/s

250% significantly higher memory bandwidth

64 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

132 W

50 W

163% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

159.4 Gigapixels/s

1997% significantly higher pixel rate

7.6 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

279 Gigatexels/s

817% significantly higher texture rate

30.4 Gigatexels/s

Shading Units

Number of processors dedicated to shader processing

1792

366% significantly more shading units

384

Texture Mapping Units

Number of processors dedicated to applying textures

112

250% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

300% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

118th of 586

413th of 586

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2021 October

2012 March

Memory Type

The type of memory used by this chip

GDDR6

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

11.2

OpenGL Support

Maximum version of OpenGL supported

4.6

4.5

Radeon RX 6600 vs GeForce GTX 660M benchmarks

In our benchmarks, the Radeon RX 6600 beats the GeForce GTX 660M in gaming performance.

In our comparison, the Radeon RX 6600 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 6600 also has a significantly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

Next up, in terms of GPU memory, the Radeon RX 6600 has significantly more memory with 8 GiB of memory compared to 2 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the GeForce GTX 660M has a significantly lower TDP at 50 W when compared to the Radeon RX 6600 at 132 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

In terms of raw gaming performance in our GPU benchmark, the Radeon RX 6600 is better than the GeForce GTX 660M.