Radeon RX 580 vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which has a GPU core clock speed of 1500 MHz, and 20480 MB of GDDR6 RAM running at 2500 MHz through a 320-bit bus. It also is made up of 5376 Stream Processors, 336 Texture Address Units, and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 115 Watts (62%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 7900 XT will be 213% faster than the Radeon RX 580 in general, because of its higher data rate. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 557056 (213%)

Texel Rate

The Radeon RX 7900 XT is quite a bit (approximately 178%) more effective at AF than the Radeon RX 580. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 322992 (178%)

Pixel Rate

The Radeon RX 7900 XT should be quite a bit (about 616%) better at AA than the Radeon RX 580, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 247776 (616%)

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: Bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.