Radeon HD 6790 vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which comes with a clock speed of 2200 MHz and a GDDR6 memory speed of 2250 MHz. It also features a 64-bit bus, and uses a 6 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 6790		150 Watts
	Difference: 43 Watts (40%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6500 XT should be 10% quicker than the Radeon HD 6790 in general, due to its greater data rate. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 13056 (10%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (about 319%) more effective at AF than the Radeon HD 6790. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 107200 (319%)

Pixel Rate

The Radeon RX 6500 XT is quite a bit (about 424%) faster with regards to anti-aliasing than the Radeon HD 6790, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 56960 (424%)

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 largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.