NVIDIA GeForce GTX 660M vs NVIDIA GeForce 940MX

Compare NVIDIA GeForce GTX 660M 2 GB vs NVIDIA GeForce 940MX, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

223 points

306 points

37% slightly better overall score

Flux Core frame rate

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

5 FPS

8 FPS

2 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

3 FPS

6 FPS

3 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

3 FPS

5 FPS

2 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

2 FPS

5 FPS

2 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (CUDA) score

CUDA compute benchmark

2901 points

6363 points

119% significantly higher Geekbench 5 (CUDA) score

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

3649 points

6582 points

80% significantly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

3524 points

5823 points

65% significantly higher Geekbench 5 (Vulkan) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

3991 points

6410 points

60% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

3524 points

5702 points

61% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

950 MHz

1004 MHz

5% slightly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

950 MHz

1242 MHz

30% slightly higher boost clock speed

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

100% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

64 GB/s

299% significantly higher memory bandwidth

16.02 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

50 W

23 W

117% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

7.6 Gigapixels/s

9.94 Gigapixels/s

30% slightly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

30.4 Gigatexels/s

1% slightly higher texture rate

29.81 Gigatexels/s

Shading Units

Number of processors dedicated to shader processing

384

Identical

384

Texture Mapping Units

Number of processors dedicated to applying textures

33% slightly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

412th of 586

376th of 586

Release date

The official date of release of this chip

2012 March

2016 June

Memory Type

The type of memory used by this chip

GDDR5

DDR3

DirectX Support

Maximum version of DirectX supported

11.2

12.0

OpenGL Support

Maximum version of OpenGL supported

4.5

4.6

GeForce GTX 660M vs GeForce 940MX benchmarks

For gaming, the GeForce GTX 660M graphics card is better than the GeForce 940MX in our tests.

Our database shows that the GeForce 940MX 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 940MX also has a slightly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

In addition, the GeForce 940MX has a significantly lower TDP at 23 W when compared to the GeForce GTX 660M at 50 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 GeForce GTX 660M is better than the GeForce 940MX.