Radeon RX 6600 XT vs Radeon RX 6650 XT

Intro

Compare all that to the Radeon RX 6650 XT, which comes with a GPU core clock speed of 2055 MHz, and 8192 MB of GDDR6 memory set to run at 2190 MHz through a 128-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon RX 6650 XT		176 Watts
	Difference: 16 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT will be 10% quicker than the Radeon RX 6600 XT overall, due to its greater bandwidth. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 24928 (10%)

Texel Rate

The Radeon RX 6650 XT will be just a bit (approximately 4%) better at AF than the Radeon RX 6600 XT. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 11136 (4%)

Pixel Rate

The Radeon RX 6650 XT is a small bit (more or less 4%) faster with regards to AA than the Radeon RX 6600 XT, and also able to handle higher resolutions while still performing well. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 5568 (4%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, the result 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 applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 reach the maximum fill rate.