GeForce RTX 3080 vs GeForce RTX 4080

Intro

Compare all of that to the GeForce RTX 4080, which features a clock speed of 2205 MHz and a GDDR6X memory frequency of 1400 MHz. It also makes use of a 256-bit memory bus, and makes use of a 4 nm design. It is comprised of 9728 SPUs, 304 TAUs, and 112 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce RTX 3080 should in theory be just a bit faster than the GeForce RTX 4080 in general. (explain)

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

Texel Rate

The GeForce RTX 4080 should be quite a bit (more or less 71%) faster with regards to AF than the GeForce RTX 3080. (explain)

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

Pixel Rate

The GeForce RTX 4080 will be much (about 79%) faster with regards to anti-aliasing than the GeForce RTX 3080, and should be capable of handling higher screen resolutions better. (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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.