GeForce RTX 4080 vs GeForce RTX 4090

Intro

Compare that to the GeForce RTX 4090, which features a core clock speed of 2235 MHz and a GDDR6X memory frequency of 1325 MHz. It also uses a 384-bit memory bus, and makes use of a 4 nm design. It is made up of 16384 SPUs, 512 Texture Address Units, and 176 Raster Operation 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

Performance-wise, the GeForce RTX 4090 should in theory be much superior to the GeForce RTX 4080 in general. (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 using a high screen resolution is important to you, then the GeForce RTX 4090 is a better choice, by a large margin. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 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 number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.