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GeForce 940M vs GeForce GTX 950M

Intro

The GeForce 940M uses a 28 nm design. nVidia has clocked the core frequency at 1072 MHz. The DDR3 memory works at a frequency of 1000 MHz on this particular model. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.

Compare those specifications to the GeForce GTX 950M, which makes use of a 28 nm design. nVidia has set the core speed at 914 MHz. The DDR3 RAM works at a speed of 1000 MHz on this specific card. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 950M		3330 points
GeForce 940M		1740 points
	Difference: 1590 (91%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 950M should theoretically be quite a bit better than the GeForce 940M overall. (explain)

GeForce GTX 950M		32000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 16000 (100%)

Texel Rate

The GeForce GTX 950M is much (about 42%) more effective at texture filtering than the GeForce 940M. (explain)

GeForce GTX 950M		36560 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 10832 (42%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 950M is a better choice, and very much so. (explain)

GeForce GTX 950M		14624 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 6048 (71%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 940M

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GeForce GTX 950M

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	GeForce 940M	GeForce GTX 950M
Manufacturer	nVidia	nVidia
Year	March 12 2015	March 12 2015
Code Name	GM108	GM107
Memory	2048 MB	2048 MB
Core Speed	1072 MHz	914 MHz
Memory Speed	2000 MHz	2000 MHz
Power (Max TDP)	(Unknown) watts	55 watts
Bandwidth	16000 MB/sec	32000 MB/sec
Texel Rate	25728 Mtexels/sec	36560 Mtexels/sec
Pixel Rate	8576 Mpixels/sec	14624 Mpixels/sec
Unified Shaders	384	640
Texture Mapping Units	24	40
Render Output Units	8	16
Bus Type	DDR3	DDR3
Bus Width	64-bit	128-bit
Fab Process	28 nm	28 nm
Transistors	(Unknown) million	(Unknown) million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 12	DirectX 12
OpenGL Version	OpenGL 4.5	OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

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