GeForce RTX 3080 vs GeForce RTX 4080

Intro

Compare all of that to the GeForce RTX 4080, which features GPU core speed of 2205 MHz, and 16384 MB of GDDR6X RAM running at 1400 MHz through a 256-bit bus. It also features 9728 Stream Processors, 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

In theory, the GeForce RTX 3080 is 6% faster than the GeForce RTX 4080 overall, because of its greater data rate. (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 screen resolution is important to you, then the GeForce RTX 4080 is a better choice, and very much so. (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 largest amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, 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 most pixels that the graphics 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.