Radeon RX 6500 XT vs Radeon RX 7900 XT

Intro

Compare all that to the Radeon RX 7900 XT, which comes with GPU clock speed of 1500 MHz, and 20480 MB of GDDR6 RAM running at 2500 MHz through a 320-bit bus. It also is comprised of 5376 Stream Processors, 336 TAUs, and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 193 Watts (180%)

Memory Bandwidth

Performance-wise, the Radeon RX 7900 XT should in theory be quite a bit superior to the Radeon RX 6500 XT overall. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 671744 (456%)

Texel Rate

The Radeon RX 7900 XT is much (approximately 258%) faster with regards to anisotropic filtering than the Radeon RX 6500 XT. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon RX 6500 XT		140800 Mtexels/sec
	Difference: 363200 (258%)

Pixel Rate

The Radeon RX 7900 XT should be quite a bit (about 309%) faster with regards to full screen anti-aliasing than the Radeon RX 6500 XT, and also capable of handling higher resolutions better. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 6500 XT		70400 Mpixels/sec
	Difference: 217600 (309%)

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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.