GeForce RTX 4080 vs Radeon RX 7900 XTX

Intro

Compare all that to the Radeon RX 7900 XTX, which has core speeds of 1855 MHz on the GPU, and 2500 MHz on the 24576 MB of GDDR6 memory. It features 6144 SPUs as well as 384 TAUs and 192 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4080		320 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 35 Watts (11%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX is 34% faster than the GeForce RTX 4080 in general, due to its higher bandwidth. (explain)

Radeon RX 7900 XTX		983040 MB/sec
GeForce RTX 4080		734003 MB/sec
	Difference: 249037 (34%)

Texel Rate

The Radeon RX 7900 XTX will be a little bit (more or less 6%) faster with regards to AF than the GeForce RTX 4080. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
GeForce RTX 4080		670320 Mtexels/sec
	Difference: 42000 (6%)

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 4080		246960 Mpixels/sec
	Difference: 109200 (44%)

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 transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 are processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.