Radeon RX 6600 XT vs Radeon RX 6650 XT

Intro

Compare all that to the Radeon RX 6650 XT, which uses a 7 nm design. AMD has set the core speed at 2055 MHz. The GDDR6 memory works at a frequency of 2190 MHz on this specific model. It features 2048 SPUs along with 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 XT		160 Watts
Radeon RX 6650 XT		176 Watts
	Difference: 16 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT should perform a little bit faster than the Radeon RX 6600 XT overall. (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 a bit (more or less 4%) better at anisotropic filtering 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 bit (about 4%) faster with regards to anti-aliasing than the Radeon RX 6600 XT, and also will be able to handle higher resolutions more effectively. (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 (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.