GeForce RTX 3080 vs Radeon RX 6800 XT

Intro

Compare all that to the Radeon RX 6800 XT, which uses a 7 nm design. AMD has clocked the core frequency at 1825 MHz. The GDDR6 memory runs at a speed of 2000 MHz on this specific model. It features 4608 SPUs as well as 288 Texture Address Units and 128 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800 XT		300 Watts
GeForce RTX 3080		320 Watts
	Difference: 20 Watts (7%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 should be much faster than the Radeon RX 6800 XT in general. (explain)

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

Texel Rate

The Radeon RX 6800 XT is quite a bit (approximately 34%) more effective at texture filtering than the GeForce RTX 3080. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 133920 (34%)

Pixel Rate

The Radeon RX 6800 XT will be a lot (about 69%) better at anti-aliasing than the GeForce RTX 3080, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 95360 (69%)

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 (in units of MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.