Radeon RX 6650 XT vs Radeon RX 6800 XT

Intro

Compare that to the Radeon RX 6800 XT, which makes use of a 7 nm design. AMD has set the core speed at 1825 MHz. The GDDR6 RAM runs at a frequency of 2000 MHz on this card. It features 4608 SPUs as well as 288 Texture Address Units and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 124 Watts (70%)

Memory Bandwidth

Theoretically, the Radeon RX 6800 XT should perform quite a bit faster than the Radeon RX 6650 XT overall. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 237216 (83%)

Texel Rate

The Radeon RX 6800 XT is a lot (approximately 100%) faster with regards to AF than the Radeon RX 6650 XT. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 262560 (100%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6800 XT is superior to the Radeon RX 6650 XT, by a large margin. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon RX 6650 XT		131520 Mpixels/sec
	Difference: 102080 (78%)

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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, 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 most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.