GeForce RTX 3080 vs GeForce RTX 4080

Intro

Compare that to the GeForce RTX 4080, which has a clock frequency of 2205 MHz and a GDDR6X memory speed of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 4 nm design. It is made up of 9728 SPUs, 304 Texture Address Units, and 112 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce RTX 3080, in theory, should be a little bit faster than the GeForce RTX 4080 overall. (explain)

GeForce RTX 3080		778547 MB/sec
GeForce RTX 4080		734003 MB/sec
	Difference: 44544 (6%)

Texel Rate

The GeForce RTX 4080 will be quite a bit (about 71%) more effective at AF than the GeForce RTX 3080. (explain)

GeForce RTX 4080		670320 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 278640 (71%)

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 4080 is the winner, by a large margin. (explain)

GeForce RTX 4080		246960 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 108720 (79%)

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 information (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.