GeForce RTX 4080 vs GeForce RTX 4090

Intro

Compare all of that to the GeForce RTX 4090, which uses a 4 nm design. nVidia has clocked the core frequency at 2235 MHz. The GDDR6X memory works at a speed of 1325 MHz on this particular model. It features 16384 SPUs as well as 512 TAUs and 176 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4080		320 Watts
GeForce RTX 4090		450 Watts
	Difference: 130 Watts (41%)

Memory Bandwidth

In theory, the GeForce RTX 4090 should be much faster than the GeForce RTX 4080 overall. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 4080		734003 MB/sec
	Difference: 308429 (42%)

Texel Rate

The GeForce RTX 4090 is a lot (approximately 71%) better at texture filtering than the GeForce RTX 4080. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 4080		670320 Mtexels/sec
	Difference: 474000 (71%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce RTX 4090 is the winner, by far. (explain)

GeForce RTX 4090		393360 Mpixels/sec
GeForce RTX 4080		246960 Mpixels/sec
	Difference: 146400 (59%)

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 data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.