GeForce GTX 780 Ti vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 1825 MHz. The GDDR6 RAM is set to run at a frequency of 2000 MHz on this model. It features 5120 SPUs along with 320 Texture Address Units and 128 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti		250 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 50 Watts (20%)

Memory Bandwidth

In theory, the Radeon RX 6900 XT is 56% faster than the GeForce GTX 780 Ti overall, because of its greater bandwidth. (explain)

Radeon RX 6900 XT		524288 MB/sec
GeForce GTX 780 Ti		336000 MB/sec
	Difference: 188288 (56%)

Texel Rate

The Radeon RX 6900 XT will be quite a bit (approximately 178%) faster with regards to anisotropic filtering than the GeForce GTX 780 Ti. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
GeForce GTX 780 Ti		210000 Mtexels/sec
	Difference: 374000 (178%)

Pixel Rate

The Radeon RX 6900 XT is a lot (about 456%) better at FSAA than the GeForce GTX 780 Ti, and should be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 191600 (456%)

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 information (in units of MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 can be applied in one second. This figure is worked out by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.