GeForce RTX 3080 Ti vs Radeon RX 7900 XTX

Intro

Compare all of that to the Radeon RX 7900 XTX, which has GPU clock speed of 1855 MHz, and 24576 MB of GDDR6 RAM running at 2500 MHz through a 384-bit bus. It also features 6144 SPUs, 384 Texture Address Units, and 192 ROPs.

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

Theoretically, the Radeon RX 7900 XTX should perform a little bit faster than the GeForce RTX 3080 Ti in general. (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 (approximately 63%) more effective at anisotropic filtering 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

If using a high resolution is important to you, then the Radeon RX 7900 XTX is a better choice, by a large margin. (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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 are processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.