GeForce RTX 3080 vs Radeon RX 6800

Intro

Compare those specs to the Radeon RX 6800, which comes with GPU clock speed of 1700 MHz, and 16384 MB of GDDR6 RAM running at 2000 MHz through a 256-bit bus. It also features 3840 SPUs, 240 TAUs, and 96 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800		250 Watts
GeForce RTX 3080		320 Watts
	Difference: 70 Watts (28%)

Memory Bandwidth

The GeForce RTX 3080, in theory, should perform quite a bit faster than the Radeon RX 6800 overall. (explain)

GeForce RTX 3080		778547 MB/sec
Radeon RX 6800		524288 MB/sec
	Difference: 254259 (48%)

Texel Rate

The Radeon RX 6800 is a bit (more or less 4%) better at anisotropic filtering than the GeForce RTX 3080. (explain)

Radeon RX 6800		408000 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 16320 (4%)

Pixel Rate

The Radeon RX 6800 should be just a bit (more or less 18%) faster with regards to FSAA than the GeForce RTX 3080, and also should be able to handle higher resolutions while still performing well. (explain)

Radeon RX 6800		163200 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 24960 (18%)

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 max amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 are applied in one second. This figure is calculated by multiplying the total number of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.