GeForce RTX 3090 vs Radeon RX 7900 XTX

Intro

Compare those specs to the Radeon RX 7900 XTX, which features 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 Texture Address Units and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3090		350 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 5 Watts (1%)

Memory Bandwidth

Theoretically, the Radeon RX 7900 XTX should be a small bit faster than the GeForce RTX 3090 in general. (explain)

Radeon RX 7900 XTX		983040 MB/sec
GeForce RTX 3090		958668 MB/sec
	Difference: 24372 (3%)

Texel Rate

The Radeon RX 7900 XTX should be a lot (more or less 56%) faster with regards to AF than the GeForce RTX 3090. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
GeForce RTX 3090		457560 Mtexels/sec
	Difference: 254760 (56%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XTX is superior to the GeForce RTX 3090, and very much so. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
GeForce RTX 3090		156240 Mpixels/sec
	Difference: 199920 (128%)

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 max amount of data (counted in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.