GeForce RTX 3090 vs Radeon RX 7900 XT

Intro

Compare all that to the Radeon RX 7900 XT, which makes use of a 5 nm design. AMD has clocked the core frequency at 1500 MHz. The GDDR6 memory works at a frequency of 2500 MHz on this specific card. It features 5376 SPUs along with 336 Texture Address Units and 192 Rasterization Operator 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

Performance-wise, the GeForce RTX 3090 should theoretically be a little bit superior to the Radeon RX 7900 XT overall. (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 bit (more or less 10%) better at anisotropic 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

The Radeon RX 7900 XT should be quite a bit (more or less 84%) faster with regards to full screen anti-aliasing than the GeForce RTX 3090, and capable of handling higher screen resolutions without losing too much performance. (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: Bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.