Radeon RX 6600 vs Radeon RX 7900 XT

Intro

Compare all of that to the Radeon RX 7900 XT, which uses a 5 nm design. AMD has set the core speed at 1500 MHz. The GDDR6 RAM is set to run at a speed of 2500 MHz on this model. It features 5376 SPUs along with 336 Texture Address Units and 192 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Radeon RX 7900 XT should be 257% quicker than the Radeon RX 6600 in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon RX 7900 XT will be quite a bit (approximately 177%) faster with regards to AF than the Radeon RX 6600. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XT is the winner, by a large margin. (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 max amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.