Radeon RX 6650 XT vs Radeon RX 6800

Intro

Compare those specifications to the Radeon RX 6800, which uses a 7 nm design. AMD has set the core frequency at 1700 MHz. The GDDR6 memory is set to run at a speed of 2000 MHz on this card. It features 3840 SPUs along with 240 Texture Address Units and 96 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon RX 6800		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

In theory, the Radeon RX 6800 is 83% faster than the Radeon RX 6650 XT overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon RX 6800 will be quite a bit (approximately 55%) more effective at texture filtering than the Radeon RX 6650 XT. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 144960 (55%)

Pixel Rate

The Radeon RX 6800 is quite a bit (more or less 24%) better at full screen anti-aliasing than the Radeon RX 6650 XT, and also should be able to handle higher resolutions better. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon RX 6650 XT		131520 Mpixels/sec
	Difference: 31680 (24%)

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 moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. 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 bandwidth is, the lower the ability to get to the maximum fill rate.