GeForce GTX 980 vs Radeon RX 6600 XT

Intro

Compare all of that to the Radeon RX 6600 XT, which features core clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs along with 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
GeForce GTX 980		165 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

Theoretically, the Radeon RX 6600 XT should be a little bit faster than the GeForce GTX 980 in general. (explain)

Radeon RX 6600 XT		262144 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 38144 (17%)

Texel Rate

The Radeon RX 6600 XT is a lot (about 75%) faster with regards to anisotropic filtering than the GeForce GTX 980. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
GeForce GTX 980		144128 Mtexels/sec
	Difference: 107776 (75%)

Pixel Rate

The Radeon RX 6600 XT will be much (approximately 75%) better at full screen anti-aliasing than the GeForce GTX 980, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
GeForce GTX 980		72064 Mpixels/sec
	Difference: 53888 (75%)

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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.