GeForce RTX 4090 vs Radeon RX 6600 XT

Intro

Compare those specifications to the Radeon RX 6600 XT, which has a GPU core clock speed of 1968 MHz, and 8192 MB of GDDR6 RAM set to run at 2000 MHz through a 128-bit bus. It also features 2048 SPUs, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
GeForce RTX 4090		450 Watts
	Difference: 290 Watts (181%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 4090 should be 298% faster than the Radeon RX 6600 XT in general, because of its higher bandwidth. (explain)

GeForce RTX 4090		1042432 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 780288 (298%)

Texel Rate

The GeForce RTX 4090 will be quite a bit (approximately 354%) more effective at anisotropic filtering than the Radeon RX 6600 XT. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 892416 (354%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce RTX 4090 is superior to the Radeon RX 6600 XT, by far. (explain)

GeForce RTX 4090		393360 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 267408 (212%)

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 (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels that the graphics card can possibly write to the 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 speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.