GeForce RTX 2080 vs Radeon RX 6800

Intro

Compare that to the Radeon RX 6800, which comes with core clock speeds of 1700 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 RAM. It features 3840 SPUs as well as 240 TAUs and 96 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080		215 Watts
Radeon RX 6800		250 Watts
	Difference: 35 Watts (16%)

Memory Bandwidth

In theory, the Radeon RX 6800 is 14% faster than the GeForce RTX 2080 in general, because of its greater data rate. (explain)

Radeon RX 6800		524288 MB/sec
GeForce RTX 2080		458752 MB/sec
	Difference: 65536 (14%)

Texel Rate

The Radeon RX 6800 should be quite a bit (about 46%) faster with regards to anisotropic filtering than the GeForce RTX 2080. (explain)

Radeon RX 6800		408000 Mtexels/sec
GeForce RTX 2080		278760 Mtexels/sec
	Difference: 129240 (46%)

Pixel Rate

The Radeon RX 6800 should be a lot (about 68%) faster with regards to full screen anti-aliasing than the GeForce RTX 2080, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 6800		163200 Mpixels/sec
GeForce RTX 2080		96960 Mpixels/sec
	Difference: 66240 (68%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.