GeForce RTX 3080 vs GeForce RTX 4080

Intro

Compare those specs to the GeForce RTX 4080, which features clock speeds of 2205 MHz on the GPU, and 1400 MHz on the 16384 MB of GDDR6X memory. It features 9728 SPUs along with 304 Texture Address Units and 112 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce RTX 3080 should theoretically perform 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 a lot (approximately 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 is a lot (approximately 79%) faster with regards to full screen anti-aliasing than the GeForce RTX 3080, and should be able to handle higher screen 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 (counted in MB per second) that can be transferred past 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 it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.