GeForce RTX 3090 vs Radeon RX 7900 XTX

Intro

Compare that to the Radeon RX 7900 XTX, which features GPU clock speed of 1855 MHz, and 24576 MB of GDDR6 memory set to run at 2500 MHz through a 384-bit bus. It also is made up of 6144 Stream Processors, 384 TAUs, and 192 ROPs.

Display Graphs

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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

As far as performance goes, the Radeon RX 7900 XTX should theoretically be a little bit better than the GeForce RTX 3090 overall. (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%) better at 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 superior to the GeForce RTX 3090, 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 moved past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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