Radeon RX 5500 XT vs Radeon RX 6600 XT

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 XT		130 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 30 Watts (23%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 XT is 14% quicker than the Radeon RX 5500 XT overall, because of its higher data rate. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon RX 5500 XT		229376 MB/sec
	Difference: 32768 (14%)

Texel Rate

The Radeon RX 6600 XT should be much (about 67%) faster with regards to anisotropic filtering than the Radeon RX 5500 XT. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon RX 5500 XT		151096 Mtexels/sec
	Difference: 100808 (67%)

Pixel Rate

The Radeon RX 6600 XT will be a lot (approximately 129%) more effective at full screen anti-aliasing than the Radeon RX 5500 XT, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon RX 5500 XT		54944 Mpixels/sec
	Difference: 71008 (129%)

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 data (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.