GeForce RTX 4080 vs Radeon RX 6950 XT

Intro

Compare that to the Radeon RX 6950 XT, which features core speeds of 1925 MHz on the GPU, and 2250 MHz on the 16384 MB of GDDR6 memory. It features 5120 SPUs as well as 320 TAUs 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

As far as performance goes, the GeForce RTX 4080 should theoretically be quite a bit better than the Radeon RX 6950 XT in general. (explain)

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

Texel Rate

The GeForce RTX 4080 is a small bit (approximately 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 will be a little bit (approximately 0%) better at FSAA than the Radeon RX 6950 XT, and will be able to handle higher screen resolutions without losing too much performance. (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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.