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

Intro

Compare those specs to the GeForce 8800 GTX, which has GPU clock speed of 575 MHz, and 768 MB of GDDR3 RAM set to run at 900 MHz through a 384-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB		143 Watts
GeForce 8800 GTX		155 Watts
	Difference: 12 Watts (8%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTX should in theory be much superior to the GeForce 8800 GTS (G80) 320MB overall. (explain)

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

Texel Rate

The GeForce 8800 GTX is a lot (more or less 49%) better at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 12176 (49%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 8800 GTX is a better choice, by a large margin. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 3540 (35%)

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 information (measured in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.