GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

Compare all of that to the Radeon RX 7900 XT, which has a clock speed of 1500 MHz and a GDDR6 memory speed of 2500 MHz. It also features a 320-bit memory bus, and uses a 5 nm design. It is comprised 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 in theory be just 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 should be much (more or less 29%) more effective at AF 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 high levels of AA is important to you, then the Radeon RX 7900 XT is the winner, by far. (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 largest amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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.