Radeon RX 6600 vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which comes with a core clock speed of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also features a 128-bit bus, and makes use of a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon RX 6650 XT		176 Watts
	Difference: 44 Watts (33%)

Memory Bandwidth

In theory, the Radeon RX 6650 XT will be 25% faster than the Radeon RX 6600 overall, due to its greater data rate. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 57696 (25%)

Texel Rate

The Radeon RX 6650 XT should be quite a bit (approximately 44%) more effective at anisotropic filtering than the Radeon RX 6600. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon RX 6600		182112 Mtexels/sec
	Difference: 80928 (44%)

Pixel Rate

The Radeon RX 6650 XT will be much (more or less 26%) better at AA than the Radeon RX 6600, and should be capable of handling higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon RX 6600		104064 Mpixels/sec
	Difference: 27456 (26%)

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 max amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the 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 maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock 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 output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.