AMD Radeon RX 6600 XT vs NVIDIA GeForce GTX 660M

Compare AMD Radeon RX 6600 XT 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

5600 points

2411% significantly better overall score

223 points

Flux Core frame rate

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

116 FPS

110 FPS significantly higher Flux Core frame rate

5 FPS

Electron frame rate

Randomly generated noise sphere test

85 FPS

82 FPS significantly higher Electron frame rate

3 FPS

City frame rate

Procedurally generated city scene with voxel rendering

102 FPS

98 FPS significantly higher City frame rate

3 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

49 FPS

46 FPS significantly higher Clouds frame rate

2 FPS

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (Metal) score

Metal compute benchmark

83409 points

3904% significantly higher Geekbench 5 (Metal) score

2083 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

82559 points

2162% significantly higher Geekbench 5 (OpenCL) score

3649 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

64460 points

1729% significantly higher Geekbench 5 (Vulkan) score

3524 points

Geekbench 6 (Metal) score

Metal compute benchmark

109165 points

4810% significantly higher Geekbench 6 (Metal) score

2223 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

82739 points

1973% significantly higher Geekbench 6 (OpenCL) score

3991 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

93271 points

2546% significantly higher Geekbench 6 (Vulkan) score

3524 points

Specifications

Core Clock Speed

Nominal chip frequency

1968 MHz

107% significantly higher core clock speed

950 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2589 MHz

172% 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

256 GB/s

300% significantly higher memory bandwidth

64 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

160 W

50 W

220% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

165.7 Gigapixels/s

2080% significantly higher pixel rate

7.6 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

331.4 Gigatexels/s

990% significantly higher texture rate

30.4 Gigatexels/s

Shading Units

Number of processors dedicated to shader processing

2048

433% significantly more shading units

384

Texture Mapping Units

Number of processors dedicated to applying textures

128

300% 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

90th of 586

411th of 586

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2021 November

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 XT vs GeForce GTX 660M benchmarks

According to the hardwareDB Benchmark, the Radeon RX 6600 XT GPU is faster than the GeForce GTX 660M in gaming.

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

As stated by the manufacturer, the Radeon RX 6600 XT has significantly more memory with 8 GiB of memory compared to 2 GiB. If you're planning at playing games at high resolutions with high-quality textures, you will need a lot of memory.

In addition, the GeForce GTX 660M has a significantly lower TDP at 50 W when compared to the Radeon RX 6600 XT at 160 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 6600 XT is faster than the GeForce GTX 660M.