Radeon RX 6600 vs Radeon RX 7900 XT

Intro

Compare that to the Radeon RX 7900 XT, which features core clock speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 memory. It features 5376 SPUs as well as 336 TAUs and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 168 Watts (127%)

Memory Bandwidth

The Radeon RX 7900 XT, in theory, should perform much faster than the Radeon RX 6600 in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 589824 (257%)

Texel Rate

The Radeon RX 7900 XT is quite a bit (about 177%) better at texture filtering than the Radeon RX 6600. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon RX 6600		182112 Mtexels/sec
	Difference: 321888 (177%)

Pixel Rate

The Radeon RX 7900 XT should be much (more or less 177%) better at FSAA than the Radeon RX 6600, and also capable of handling higher resolutions better. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 6600		104064 Mpixels/sec
	Difference: 183936 (177%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 is worked out by multiplying the total amount of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics 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 number of Raster Operations Pipelines by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.