GeForce RTX 4080 vs Radeon RX 6950 XT

Intro

Compare all that to the Radeon RX 6950 XT, which features GPU core speed of 1925 MHz, and 16384 MB of GDDR6 RAM set to run at 2250 MHz through a 256-bit bus. It also is comprised of 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4080		320 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 15 Watts (5%)

Memory Bandwidth

Theoretically, the GeForce RTX 4080 should perform much faster than the Radeon RX 6950 XT overall. (explain)

GeForce RTX 4080		734003 MB/sec
Radeon RX 6950 XT		589824 MB/sec
	Difference: 144179 (24%)

Texel Rate

The GeForce RTX 4080 will be a bit (about 9%) more effective at anisotropic filtering than the Radeon RX 6950 XT. (explain)

GeForce RTX 4080		670320 Mtexels/sec
Radeon RX 6950 XT		616000 Mtexels/sec
	Difference: 54320 (9%)

Pixel Rate

The GeForce RTX 4080 is a bit (approximately 0%) faster with regards to AA than the Radeon RX 6950 XT, and also will be able to handle higher resolutions better. (explain)

GeForce RTX 4080		246960 Mpixels/sec
Radeon RX 6950 XT		246400 Mpixels/sec
	Difference: 560 (0%)

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 largest amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.