GeForce GTX 285 2GB vs GeForce GTX 750

Intro

Compare those specifications to the GeForce GTX 750, which comes with clock speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 149 Watts (271%)

Memory Bandwidth

In theory, the GeForce GTX 285 2GB is 99% faster than the GeForce GTX 750 in general, because of its greater data rate. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 78976 (99%)

Texel Rate

The GeForce GTX 285 2GB should be a lot (about 59%) better at anisotropic filtering than the GeForce GTX 750. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 19200 (59%)

Pixel Rate

The GeForce GTX 285 2GB will be much (more or less 27%) faster with regards to AA than the GeForce GTX 750, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 4416 (27%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the 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 maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.