Radeon RX 6650 XT vs Radeon RX 6900 XT

Intro

Compare those specifications to the Radeon RX 6900 XT, which comes with a core clock speed of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 256-bit bus, and uses a 7 nm design. It is made up of 5120 SPUs, 320 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 124 Watts (70%)

Memory Bandwidth

Theoretically, the Radeon RX 6900 XT should perform much faster than the Radeon RX 6650 XT overall. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 237216 (83%)

Texel Rate

The Radeon RX 6900 XT should be quite a bit (about 122%) better at texture filtering than the Radeon RX 6650 XT. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 320960 (122%)

Pixel Rate

The Radeon RX 6900 XT will be a lot (more or less 78%) better at AA than the Radeon RX 6650 XT, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6900 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: Bandwidth is the max amount of data (measured in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.