GeForce RTX 3080 vs GeForce RTX 3090

Intro

Compare all that to the GeForce RTX 3090, which has GPU core speed of 1395 MHz, and 24576 MB of GDDR6X RAM set to run at 1219 MHz through a 384-bit bus. It also features 10496 SPUs, 328 TAUs, and 112 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080		320 Watts
GeForce RTX 3090		350 Watts
	Difference: 30 Watts (9%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 3090 should in theory be quite a bit superior to the GeForce RTX 3080 overall. (explain)

GeForce RTX 3090		958668 MB/sec
GeForce RTX 3080		778547 MB/sec
	Difference: 180121 (23%)

Texel Rate

The GeForce RTX 3090 is a bit (about 17%) faster with regards to AF than the GeForce RTX 3080. (explain)

GeForce RTX 3090		457560 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 65880 (17%)

Pixel Rate

The GeForce RTX 3090 is just a bit (about 13%) faster with regards to FSAA than the GeForce RTX 3080, and also capable of handling higher resolutions more effectively. (explain)

GeForce RTX 3090		156240 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 18000 (13%)

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 max amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number 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 calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.