NVIDIA GeForce GTX 660 vs AMD Radeon RX 7800 XT

Compare NVIDIA GeForce GTX 660 3 GB vs AMD Radeon RX 7800 XT 16 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

15475 points

1796% significantly better overall score

Flux Core frame rate

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

18 FPS

326 FPS

307 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

11 FPS

216 FPS

204 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

13 FPS

295 FPS

283 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

9 FPS

127 FPS

118 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

1317 points

4154 points

215% significantly higher 3DMark Graphics score

Blender score

Cycles Render (Samples per minute)

122.56 points

2429.25 points

1882% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

11353 points

142590 points

1155% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

11858 points

157875 points

1231% 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

2430 MHz

135% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

3 GiB

16 GiB

433% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

192 Bit

256 Bit

33% slightly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

144.2 GB/s

624 GB/s

332% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

140 W

87% significantly lower TDP

263 W

Pixel Rate

Number of pixels that can be rendered per second

20.64 Gigapixels/s

233 Gigapixels/s

1028% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

82.56 Gigatexels/s

583 Gigatexels/s

606% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

1.98 TFLOPS

36.04 TFLOPS

1719% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

960

8192

753% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

240

200% 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

276th of 586

17th of 586

Family

The product line

Radeon RX 7000 Series

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 7800 XT benchmarks

For gaming, the Radeon RX 7800 XT graphics card is better than the GeForce GTX 660 in our tests.

The Radeon RX 7800 XT 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 7800 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.

Furthermore, the spec sheet for both these GPUs show that the Radeon RX 7800 XT has significantly more memory with 16 GiB of memory compared to 3 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the GeForce GTX 660 has a significantly lower TDP at 140 W when compared to the Radeon RX 7800 XT at 263 W. TDP (Thermal Design Power) measures total heat output from the chip.

According to the results of the hardwareDB benchmark utility, the Radeon RX 7800 XT is faster than the GeForce GTX 660.