GeForce 8800 GTS (G80) 320MB vs GeForce GTX 750 Ti

Intro

Compare those specs to the GeForce GTX 750 Ti, which features GPU clock speed of 1020 MHz, and 2048 MB of GDDR5 memory running at 1350 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 83 Watts (138%)

Memory Bandwidth

In theory, the GeForce GTX 750 Ti should be 36% quicker than the GeForce 8800 GTS (G80) 320MB in general, because of its greater data rate. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 23040 (36%)

Texel Rate

The GeForce GTX 750 Ti is quite a bit (more or less 66%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 16176 (66%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 750 Ti is superior to the GeForce 8800 GTS (G80) 320MB, by far. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 6060 (59%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the 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 maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.