GeForce GTX 580 vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which has a GPU core clock speed of 2200 MHz, and 4096 MB of GDDR6 RAM running at 2250 MHz through a 64-bit bus. It also is made up of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
GeForce GTX 580		244 Watts
	Difference: 137 Watts (128%)

Memory Bandwidth

In theory, the GeForce GTX 580 is 30% quicker than the Radeon RX 6500 XT overall, because of its higher bandwidth. (explain)

GeForce GTX 580		192384 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 44928 (30%)

Texel Rate

The Radeon RX 6500 XT should be quite a bit (approximately 185%) better at anisotropic filtering than the GeForce GTX 580. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 91392 (185%)

Pixel Rate

The Radeon RX 6500 XT will be a lot (about 90%) more effective at AA than the GeForce GTX 580, and also will be able to handle higher resolutions better. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
GeForce GTX 580		37056 Mpixels/sec
	Difference: 33344 (90%)

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 data (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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