GeForce RTX 3080 vs GeForce RTX 4080

Intro

Compare those specifications to the GeForce RTX 4080, which has core clock speeds of 2205 MHz on the GPU, and 1400 MHz on the 16384 MB of GDDR6X RAM. It features 9728 SPUs as well as 304 Texture Address Units and 112 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 should be 6% quicker than the GeForce RTX 4080 in general, due to its greater bandwidth. (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 (approximately 71%) better at anisotropic filtering 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 should be a lot (more or less 79%) better at full screen anti-aliasing than the GeForce RTX 3080, and also capable of handling higher resolutions without slowing down too much. (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 maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card 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 ROPs by the clock 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 is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.