GeForce RTX 3080 vs Radeon RX 7900 XTX

Intro

Compare those specifications to the Radeon RX 7900 XTX, which features core clock speeds of 1855 MHz on the GPU, and 2500 MHz on the 24576 MB of GDDR6 RAM. It features 6144 SPUs as well as 384 Texture Address Units and 192 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080		320 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 35 Watts (11%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX will be 26% faster than the GeForce RTX 3080 overall, due to its higher data rate. (explain)

Radeon RX 7900 XTX		983040 MB/sec
GeForce RTX 3080		778547 MB/sec
	Difference: 204493 (26%)

Texel Rate

The Radeon RX 7900 XTX will be a lot (more or less 82%) faster with regards to texture filtering than the GeForce RTX 3080. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 320640 (82%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 7900 XTX is superior to the GeForce RTX 3080, by a large margin. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 217920 (158%)

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 (measured in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.