GeForce 8800 GTS (G80) 640MB vs Radeon RX 7900 XT

Intro

Compare those specifications to the Radeon RX 7900 XT, which features clock speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 memory. It features 5376 SPUs along with 336 TAUs and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB		143 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 157 Watts (110%)

Memory Bandwidth

The Radeon RX 7900 XT should theoretically be a lot faster than the GeForce 8800 GTS (G80) 640MB overall. (explain)

Radeon RX 7900 XT		819200 MB/sec
GeForce 8800 GTS (G80) 640MB		63360 MB/sec
	Difference: 755840 (1193%)

Texel Rate

The Radeon RX 7900 XT should be quite a bit (about 1947%) better at texture filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 479376 (1947%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XT is the winner, by far. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
	Difference: 277740 (2707%)

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 data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. 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 - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.