GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

Compare those specifications to the Radeon RX 7900 XT, which comes with a clock speed of 1500 MHz and a GDDR6 memory frequency of 2500 MHz. It also makes use of a 320-bit bus, and makes use of a 5 nm design. It is made up of 5376 SPUs, 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

As far as performance goes, the Radeon RX 7900 XT should theoretically be a bit superior to the GeForce RTX 3080 in general. (explain)

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

Texel Rate

The Radeon RX 7900 XT is much (approximately 29%) more effective at texture 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 running with a high screen resolution is important to you, then the Radeon RX 7900 XT is a better choice, 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 max amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.