Geforce GTX 770 vs Radeon RX 6800 XT

Intro

Compare those specifications to the Radeon RX 6800 XT, which has a clock speed of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also uses a 256-bit bus, and makes use of a 7 nm design. It features 4608 SPUs, 288 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 70 Watts (30%)

Memory Bandwidth

In theory, the Radeon RX 6800 XT will be 134% faster than the Geforce GTX 770 overall, due to its greater data rate. (explain)

Radeon RX 6800 XT		524288 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 299904 (134%)

Texel Rate

The Radeon RX 6800 XT is a lot (about 293%) more effective at AF than the Geforce GTX 770. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 391712 (293%)

Pixel Rate

The Radeon RX 6800 XT will be quite a bit (approximately 598%) more effective at anti-aliasing than the Geforce GTX 770, and also able to handle higher resolutions more effectively. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 200128 (598%)

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 megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.