GeForce RTX 3090 vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which comes with GPU clock speed of 1500 MHz, and 20480 MB of GDDR6 RAM set to run at 2500 MHz through a 320-bit bus. It also features 5376 Stream Processors, 336 TAUs, and 192 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT		300 Watts
GeForce RTX 3090		350 Watts
	Difference: 50 Watts (17%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3090 should be 17% quicker than the Radeon RX 7900 XT overall, due to its greater data rate. (explain)

GeForce RTX 3090		958668 MB/sec
Radeon RX 7900 XT		819200 MB/sec
	Difference: 139468 (17%)

Texel Rate

The Radeon RX 7900 XT should be a little bit (approximately 10%) more effective at texture filtering than the GeForce RTX 3090. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce RTX 3090		457560 Mtexels/sec
	Difference: 46440 (10%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 7900 XT is superior to the GeForce RTX 3090, by far. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 3090		156240 Mpixels/sec
	Difference: 131760 (84%)

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 max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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