GeForce RTX 3080 12 GB vs Radeon RX 7900 XTX

Intro

Compare all of that to the Radeon RX 7900 XTX, which uses a 5 nm design. AMD has set the core frequency at 1855 MHz. The GDDR6 RAM is set to run at a speed of 2500 MHz on this particular model. It features 6144 SPUs as well as 384 TAUs and 192 Rasterization Operator Units.

Display Graphs

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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 small bit faster than the GeForce RTX 3080 12 GB overall. (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 will be a lot (about 102%) more effective at texture 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 should be much (approximately 152%) faster with regards to anti-aliasing than the GeForce RTX 3080 12 GB, and should be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.