GeForce RTX 4080 vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which uses a 5 nm design. AMD has set the core speed at 1500 MHz. The GDDR6 RAM works at a speed of 2500 MHz on this particular model. It features 5376 SPUs as well as 336 TAUs and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT		300 Watts
GeForce RTX 4080		320 Watts
	Difference: 20 Watts (7%)

Memory Bandwidth

In theory, the Radeon RX 7900 XT should be just a bit faster than the GeForce RTX 4080 in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
GeForce RTX 4080		734003 MB/sec
	Difference: 85197 (12%)

Texel Rate

The GeForce RTX 4080 is a lot (about 33%) better at texture filtering than the Radeon RX 7900 XT. (explain)

GeForce RTX 4080		670320 Mtexels/sec
Radeon RX 7900 XT		504000 Mtexels/sec
	Difference: 166320 (33%)

Pixel Rate

The Radeon RX 7900 XT will be a small bit (approximately 17%) more effective at anti-aliasing than the GeForce RTX 4080, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 4080		246960 Mpixels/sec
	Difference: 41040 (17%)

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 data (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.