GeForce RTX 4080 vs Radeon RX 6950 XT

Intro

Compare all that to the Radeon RX 6950 XT, which has core speeds of 1925 MHz on the GPU, and 2250 MHz on the 16384 MB of GDDR6 memory. It features 5120 SPUs along with 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 speaking, the GeForce RTX 4080 will be 24% quicker than the Radeon RX 6950 XT overall, due to its greater bandwidth. (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 little bit (about 9%) better at texture 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%) more effective at full screen anti-aliasing than the Radeon RX 6950 XT, and will be able to handle higher screen 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 max amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.