NVIDIA GeForce GTX 660 vs AMD Radeon RX 7900 XT

Compare NVIDIA GeForce GTX 660 3 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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Benchmark Score

Overall Score

General gaming and workstation score

816 points

19220 points

2255% significantly better overall score

Flux Core frame rate

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

18 FPS

393 FPS

375 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

11 FPS

273 FPS

262 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

13 FPS

362 FPS

349 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

9 FPS

158 FPS

149 FPS significantly higher Clouds frame rate

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

1317 points

5616 points

326% significantly higher 3DMark Graphics score

Blender score

Cycles Render (Samples per minute)

122.56 points

3540.90 points

2789% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

11353 points

187759 points

1553% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

11858 points

213258 points

1698% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

980 MHz

1800 MHz

83% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1032 MHz

2400 MHz

132% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

3 GiB

20 GiB

566% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

192 Bit

384 Bit

100% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

144.2 GB/s

800 GB/s

454% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

140 W

125% significantly lower TDP

315 W

Pixel Rate

Number of pixels that can be rendered per second

20.64 Gigapixels/s

460 Gigapixels/s

2128% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

82.56 Gigatexels/s

810 Gigatexels/s

881% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

1.98 TFLOPS

54.07 TFLOPS

2629% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

960

12288

1180% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

768

859% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

192

700% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

278th of 586

10th of 586

Family

The product line

Radeon RX 7000 Series

Release date

The official date of release of this chip

2022 December

Memory Type

The type of memory used by this chip

GDDR5

GDDR6

DirectX Support

Maximum version of DirectX supported

11.0

12.0

OpenGL Support

Maximum version of OpenGL supported

4.5

4.6

GeForce GTX 660 vs Radeon RX 7900 XT benchmarks

In our benchmarks, the Radeon RX 7900 XT beats the GeForce GTX 660 in gaming performance.

Our database shows that the Radeon RX 7900 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 7900 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 7900 XT has significantly more memory with 20 GiB of memory compared to 3 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the GeForce GTX 660 has a significantly lower TDP at 140 W when compared to the Radeon RX 7900 XT at 315 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 7900 XT is better than the GeForce GTX 660.