Radeon RX 6800 XT vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which makes use of a 5 nm design. AMD has clocked the core speed at 1500 MHz. The GDDR6 memory is set to run at a frequency of 2500 MHz on this card. It features 5376 SPUs along with 336 TAUs and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon RX 7900 XT should be a lot faster than the Radeon RX 6800 XT in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 6800 XT		524288 MB/sec
	Difference: 294912 (56%)

Texel Rate

The Radeon RX 6800 XT should be a bit (more or less 4%) more effective at AF than the Radeon RX 7900 XT. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon RX 7900 XT		504000 Mtexels/sec
	Difference: 21600 (4%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 7900 XT is a better choice, and very much so. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 6800 XT		233600 Mpixels/sec
	Difference: 54400 (23%)

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 (in units of MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.