GeForce RTX 3080 12 GB vs GeForce RTX 4090

Intro

Compare those specifications to the GeForce RTX 4090, which features a GPU core clock speed of 2235 MHz, and 24576 MB of GDDR6X memory running at 1325 MHz through a 384-bit bus. It also is comprised of 16384 Stream Processors, 512 Texture Address Units, and 176 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080 12 GB		350 Watts
GeForce RTX 4090		450 Watts
	Difference: 100 Watts (29%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 4090 should be 12% quicker than the GeForce RTX 3080 12 GB overall, due to its higher bandwidth. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 3080 12 GB		934298 MB/sec
	Difference: 108134 (12%)

Texel Rate

The GeForce RTX 4090 will be much (about 224%) better at texture filtering than the GeForce RTX 3080 12 GB. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 3080 12 GB		352800 Mtexels/sec
	Difference: 791520 (224%)

Pixel Rate

The GeForce RTX 4090 will be a lot (about 179%) better at anti-aliasing than the GeForce RTX 3080 12 GB, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce RTX 4090		393360 Mpixels/sec
GeForce RTX 3080 12 GB		141120 Mpixels/sec
	Difference: 252240 (179%)

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 within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.