NVIDIA GeForce GTX 950 vs NVIDIA GeForce GTX 660

Compare NVIDIA GeForce GTX 950 2 GB vs NVIDIA GeForce GTX 660 3 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

1038 points

27% slightly better overall score

816 points

Flux Core frame rate

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

22 FPS

4 FPS slightly higher Flux Core frame rate

18 FPS

Electron frame rate

Randomly generated noise sphere test

16 FPS

5 FPS significantly higher Electron frame rate

11 FPS

City frame rate

Procedurally generated city scene with voxel rendering

15 FPS

2 FPS slightly higher City frame rate

13 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

13 FPS

4 FPS significantly higher Clouds frame rate

9 FPS

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

1900 points

44% significantly higher 3DMark Graphics score

1317 points

Blender score

Cycles Render (Samples per minute)

122.99 points

0.35% slightly higher Blender score

122.56 points

Geekbench 5 (CUDA) score

CUDA compute benchmark

15998 points

86% significantly higher Geekbench 5 (CUDA) score

8583 points

Geekbench 5 (Metal) score

Metal compute benchmark

7172 points

31% slightly higher Geekbench 5 (Metal) score

5449 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

18233 points

60% significantly higher Geekbench 5 (OpenCL) score

11381 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

18345 points

71% significantly higher Geekbench 5 (Vulkan) score

10693 points

Geekbench 6 (Metal) score

Metal compute benchmark

7172 points

66% significantly higher Geekbench 6 (Metal) score

4311 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

16999 points

49% significantly higher Geekbench 6 (OpenCL) score

11353 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

16578 points

39% slightly higher Geekbench 6 (Vulkan) score

11858 points

Specifications

Core Clock Speed

Nominal chip frequency

1024 MHz

4% slightly higher core clock speed

980 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1188 MHz

15% slightly higher boost clock speed

1032 MHz

Memory

Onboard memory size for textures and vertices

2 GiB

3 GiB

49% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

192 Bit

49% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

105.8 GB/s

144.2 GB/s

36% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

90 W

55% significantly lower TDP

140 W

Pixel Rate

Number of pixels that can be rendered per second

38.02 Gigapixels/s

84% significantly higher pixel rate

20.64 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

57.02 Gigatexels/s

82.56 Gigatexels/s

44% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

1.82 TFLOPS

1.98 TFLOPS

8% slightly better floating point performance

Shading Units

Number of processors dedicated to shader processing

768

960

25% slightly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

66% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

33% slightly more render output processors

Other details

Rank

Ranking in the hardwareDB database

261st of 586

277th of 586

Release date

The official date of release of this chip

2015 August

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

11.0

OpenGL Support

Maximum version of OpenGL supported

4.5

GeForce GTX 950 vs GeForce GTX 660 comparison

In our benchmarks, the GeForce GTX 950 beats the GeForce GTX 660 in gaming performance.

Our database shows that the GeForce GTX 950 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 GeForce GTX 950 also has a slightly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

Furthermore, the spec sheet for both these GPUs show that the GeForce GTX 660 has significantly more memory with 3 GiB of memory compared to 2 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the GeForce GTX 950 has a significantly lower TDP at 90 W when compared to the GeForce GTX 660 at 140 W. TDP (Thermal Design Power) measures total heat output from the chip.

In terms of raw gaming performance in our GPU benchmark, the GeForce GTX 950 is better than the GeForce GTX 660.