GeForce 940M vs GeForce GTX 285 2GB

Intro

Compare all of that to the GeForce GTX 285 2GB, which comes with a clock speed of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also makes use of a 512-bit memory bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 285 2GB should in theory 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 a lot (more or less 101%) more effective at AF than the GeForce 940M. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 2GB is a better choice, and very much so. (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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should 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, HDR and high resolutions.

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

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