GeForce GTX 780 Ti vs Radeon RX 6800

Intro

Compare all that to the Radeon RX 6800, which makes use of a 7 nm design. AMD has set the core speed at 1700 MHz. The GDDR6 RAM runs at a frequency of 2000 MHz on this specific model. 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

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon RX 6800 should be 56% quicker than the GeForce GTX 780 Ti overall, because of its higher bandwidth. (explain)

Radeon RX 6800		524288 MB/sec
GeForce GTX 780 Ti		336000 MB/sec
	Difference: 188288 (56%)

Texel Rate

The Radeon RX 6800 is much (about 94%) faster with regards to texture filtering than the GeForce GTX 780 Ti. (explain)

Radeon RX 6800		408000 Mtexels/sec
GeForce GTX 780 Ti		210000 Mtexels/sec
	Difference: 198000 (94%)

Pixel Rate

The Radeon RX 6800 is much (more or less 289%) better at full screen anti-aliasing than the GeForce GTX 780 Ti, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 6800		163200 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 121200 (289%)

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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 can be processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.