GeForce 940M vs GeForce GTX 950M

Intro

Compare those specifications to the GeForce GTX 950M, which has core clock speeds of 914 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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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

In theory, the GeForce GTX 950M is 100% faster than the GeForce 940M in general, because of its higher data rate. (explain)

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

Texel Rate

The GeForce GTX 950M will be quite a bit (more or less 42%) better at anisotropic filtering than the GeForce 940M. (explain)

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

Pixel Rate

The GeForce GTX 950M will be a lot (about 71%) better at AA than the GeForce 940M, and capable of handling higher resolutions more effectively. (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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.