GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

Compare all of that to the Radeon RX 7900 XT, which uses a 5 nm design. AMD has clocked the core speed at 1500 MHz. The GDDR6 memory works at a frequency of 2500 MHz on this card. It features 5376 SPUs along with 336 TAUs and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT		300 Watts
GeForce RTX 3080		320 Watts
	Difference: 20 Watts (7%)

Memory Bandwidth

In theory, the Radeon RX 7900 XT will be 5% faster than the GeForce RTX 3080 in general, because of its higher bandwidth. (explain)

Radeon RX 7900 XT		819200 MB/sec
GeForce RTX 3080		778547 MB/sec
	Difference: 40653 (5%)

Texel Rate

The Radeon RX 7900 XT should be quite a bit (approximately 29%) more effective at anisotropic filtering than the GeForce RTX 3080. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 112320 (29%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 7900 XT is superior to the GeForce RTX 3080, and very much so. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 149760 (108%)

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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.