GeForce RTX 3080 vs GeForce RTX 4090

Intro

Compare those specs to the GeForce RTX 4090, which features core clock speeds of 2235 MHz on the GPU, and 1325 MHz on the 24576 MB of GDDR6X RAM. It features 16384 SPUs along with 512 TAUs and 176 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080		320 Watts
GeForce RTX 4090		450 Watts
	Difference: 130 Watts (41%)

Memory Bandwidth

In theory, the GeForce RTX 4090 will be 34% faster than the GeForce RTX 3080 in general, due to its higher bandwidth. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 3080		778547 MB/sec
	Difference: 263885 (34%)

Texel Rate

The GeForce RTX 4090 will be quite a bit (about 192%) better at anisotropic filtering than the GeForce RTX 3080. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 752640 (192%)

Pixel Rate

The GeForce RTX 4090 is much (about 185%) more effective at FSAA than the GeForce RTX 3080, and also able to handle higher resolutions more effectively. (explain)

GeForce RTX 4090		393360 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 255120 (185%)

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 data (measured in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write 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 the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.