GeForce RTX 3080 12 GB vs Radeon RX 7900 XTX

Intro

Compare that to the Radeon RX 7900 XTX, which makes use of a 5 nm design. AMD has set the core frequency at 1855 MHz. The GDDR6 memory runs at a speed of 2500 MHz on this specific card. It features 6144 SPUs along with 384 TAUs and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080 12 GB		350 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 5 Watts (1%)

Memory Bandwidth

The Radeon RX 7900 XTX, in theory, should perform a bit faster than the GeForce RTX 3080 12 GB in general. (explain)

Radeon RX 7900 XTX		983040 MB/sec
GeForce RTX 3080 12 GB		934298 MB/sec
	Difference: 48742 (5%)

Texel Rate

The Radeon RX 7900 XTX is much (about 102%) faster with regards to anisotropic filtering than the GeForce RTX 3080 12 GB. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
GeForce RTX 3080 12 GB		352800 Mtexels/sec
	Difference: 359520 (102%)

Pixel Rate

The Radeon RX 7900 XTX is much (more or less 152%) better at anti-aliasing than the GeForce RTX 3080 12 GB, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
GeForce RTX 3080 12 GB		141120 Mpixels/sec
	Difference: 215040 (152%)

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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.