GeForce 940M vs GeForce GTX 285 2GB

Intro

Compare those specs to the GeForce GTX 285 2GB, which comes with GPU clock speed of 648 MHz, and 2048 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also features 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 2GB should perform much faster than the GeForce 940M in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 142976 (894%)

Texel Rate

The GeForce GTX 285 2GB should be much (more or less 101%) more effective at anisotropic filtering than the GeForce 940M. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 26112 (101%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 285 2GB is the winner, by a large margin. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 12160 (142%)

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: Bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.