GeForce RTX 3090 vs Radeon RX 7900 XTX

Intro

Compare those specifications to the Radeon RX 7900 XTX, which makes use of a 5 nm design. AMD has set the core frequency at 1855 MHz. The GDDR6 RAM works at a speed of 2500 MHz on this particular model. It features 6144 SPUs along with 384 Texture Address Units and 192 Rasterization Operator Units.

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

In theory, the Radeon RX 7900 XTX will be 3% quicker than the GeForce RTX 3090 in general, because of its higher bandwidth. (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 (approximately 56%) faster with regards to anisotropic filtering 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 resolution is important to you, then the Radeon RX 7900 XTX is the winner, by far. (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 maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core 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 in one second.

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