GeForce RTX 3080 Ti vs Radeon RX 7900 XTX

Intro

Compare all of that to the Radeon RX 7900 XTX, which comes with clock speeds of 1855 MHz on the GPU, and 2500 MHz on the 24576 MB of GDDR6 RAM. It features 6144 SPUs along with 384 TAUs and 192 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080 Ti		350 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 5 Watts (1%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX should be 5% quicker than the GeForce RTX 3080 Ti in general, because of its greater data rate. (explain)

Radeon RX 7900 XTX		983040 MB/sec
GeForce RTX 3080 Ti		934297 MB/sec
	Difference: 48743 (5%)

Texel Rate

The Radeon RX 7900 XTX should be quite a bit (about 63%) better at AF than the GeForce RTX 3080 Ti. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
GeForce RTX 3080 Ti		436800 Mtexels/sec
	Difference: 275520 (63%)

Pixel Rate

The Radeon RX 7900 XTX is a lot (about 133%) better at full screen anti-aliasing than the GeForce RTX 3080 Ti, and also will be capable of handling higher resolutions better. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
GeForce RTX 3080 Ti		152880 Mpixels/sec
	Difference: 203280 (133%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.