Radeon RX 580 vs Radeon RX 6800 XT

Intro

Compare those specifications to the Radeon RX 6800 XT, which uses a 7 nm design. AMD has clocked the core frequency at 1825 MHz. The GDDR6 RAM runs at a speed of 2000 MHz on this particular model. It features 4608 SPUs along with 288 TAUs and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 115 Watts (62%)

Memory Bandwidth

Performance-wise, the Radeon RX 6800 XT should in theory be much better than the Radeon RX 580 overall. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 262144 (100%)

Texel Rate

The Radeon RX 6800 XT is quite a bit (approximately 190%) faster with regards to AF than the Radeon RX 580. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 344592 (190%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6800 XT is a better choice, and very much so. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 193376 (481%)

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 maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type 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 anti-aliasing, HDR 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 number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.