GeForce RTX 3090 vs Radeon RX 6600 XT

Intro

Compare those specs to the Radeon RX 6600 XT, which makes use of a 7 nm design. AMD has clocked the core speed at 1968 MHz. The GDDR6 RAM works at a frequency of 2000 MHz on this specific model. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
GeForce RTX 3090		350 Watts
	Difference: 190 Watts (119%)

Memory Bandwidth

The GeForce RTX 3090 should theoretically be quite a bit faster than the Radeon RX 6600 XT in general. (explain)

GeForce RTX 3090		958668 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 696524 (266%)

Texel Rate

The GeForce RTX 3090 will be a lot (about 82%) better at AF than the Radeon RX 6600 XT. (explain)

GeForce RTX 3090		457560 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 205656 (82%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 3090 is superior to the Radeon RX 6600 XT, by a large margin. (explain)

GeForce RTX 3090		156240 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 30288 (24%)

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 largest amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.