GeForce RTX 3080 vs GeForce RTX 4090

Intro

Compare all of that to the GeForce RTX 4090, which has core speeds of 2235 MHz on the GPU, and 1325 MHz on the 24576 MB of GDDR6X memory. It features 16384 SPUs as well as 512 Texture Address Units 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

Performance-wise, the GeForce RTX 4090 should theoretically be much better than the GeForce RTX 3080 overall. (explain)

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

Texel Rate

The GeForce RTX 4090 is much (approximately 192%) faster with regards to texture filtering than the GeForce RTX 3080. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 4090 is a better choice, and very much so. (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 maximum amount of information (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.