GeForce 940M vs GeForce GTX 950M

Intro

Compare all that to the GeForce GTX 950M, which has a clock frequency of 914 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

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

Theoretically speaking, the GeForce GTX 950M will be 100% faster than the GeForce 940M overall, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 950M will be much (more or less 42%) more effective at AF than the GeForce 940M. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 950M is superior to the GeForce 940M, by a large margin. (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 largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.