GeForce GTX 980 vs Radeon RX 6900 XT

Intro

Compare all that to the Radeon RX 6900 XT, which features a clock frequency of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 7 nm design. It is comprised of 5120 SPUs, 320 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 135 Watts (82%)

Memory Bandwidth

Performance-wise, the Radeon RX 6900 XT should in theory be quite a bit better than the GeForce GTX 980 in general. (explain)

Radeon RX 6900 XT		524288 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 300288 (134%)

Texel Rate

The Radeon RX 6900 XT is a lot (more or less 305%) faster with regards to anisotropic filtering than the GeForce GTX 980. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
GeForce GTX 980		144128 Mtexels/sec
	Difference: 439872 (305%)

Pixel Rate

The Radeon RX 6900 XT should be a lot (about 224%) more effective at anti-aliasing than the GeForce GTX 980, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
GeForce GTX 980		72064 Mpixels/sec
	Difference: 161536 (224%)

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 largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record 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 filling the screen with pixels (the image). The actual pixel 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 reach the maximum fill rate.