GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which has GPU clock speed of 1500 MHz, and 20480 MB of GDDR6 memory set to run at 2500 MHz through a 320-bit bus. It also is comprised of 5376 Stream Processors, 336 Texture Address Units, and 192 Raster Operation Units.

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 a little bit superior to the GeForce RTX 3080 overall. (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 a lot (about 29%) better 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 running with lots of anti-aliasing is important to you, then the Radeon RX 7900 XT is superior to the GeForce RTX 3080, by a large margin. (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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.