GeForce 8800 GTS (G80) 640MB vs GeForce GTX 1080

Intro

Compare those specifications to the GeForce GTX 1080, which comes with GPU clock speed of 1607 MHz, and 8192 MB of GDDR5X RAM set to run at 1251 MHz through a 256-bit bus. It also is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB		143 Watts
GeForce GTX 1080		180 Watts
	Difference: 37 Watts (26%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1080 should theoretically be a lot superior to the GeForce 8800 GTS (G80) 640MB in general. (explain)

GeForce GTX 1080		327680 MB/sec
GeForce 8800 GTS (G80) 640MB		63360 MB/sec
	Difference: 264320 (417%)

Texel Rate

The GeForce GTX 1080 should be much (more or less 944%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce GTX 1080		257120 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 232496 (944%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 1080 is the winner, and very much so. (explain)

GeForce GTX 1080		102848 Mpixels/sec
GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
	Difference: 92588 (902%)

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 max amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.