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

Intro

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

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

In theory, the Radeon RX 7900 XT should be 1193% faster than the GeForce 8800 GTS (G80) 640MB overall, due to its higher bandwidth. (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 is quite a bit (more or less 1947%) more effective at AF 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

The Radeon RX 7900 XT is quite a bit (more or less 2707%) better at full screen anti-aliasing than the GeForce 8800 GTS (G80) 640MB, and should be able to handle higher screen resolutions more effectively. (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 largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 are applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.