GeForce RTX 2080 vs GeForce RTX 4080

Intro

Compare those specifications to the GeForce RTX 4080, which comes with core speeds of 2205 MHz on the GPU, and 1400 MHz on the 16384 MB of GDDR6X RAM. It features 9728 SPUs along with 304 Texture Address Units and 112 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080		215 Watts
GeForce RTX 4080		320 Watts
	Difference: 105 Watts (49%)

Memory Bandwidth

Theoretically, the GeForce RTX 4080 should perform much faster than the GeForce RTX 2080 in general. (explain)

GeForce RTX 4080		734003 MB/sec
GeForce RTX 2080		458752 MB/sec
	Difference: 275251 (60%)

Texel Rate

The GeForce RTX 4080 is much (approximately 140%) faster with regards to anisotropic filtering than the GeForce RTX 2080. (explain)

GeForce RTX 4080		670320 Mtexels/sec
GeForce RTX 2080		278760 Mtexels/sec
	Difference: 391560 (140%)

Pixel Rate

The GeForce RTX 4080 should be much (approximately 155%) more effective at full screen anti-aliasing than the GeForce RTX 2080, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce RTX 4080		246960 Mpixels/sec
GeForce RTX 2080		96960 Mpixels/sec
	Difference: 150000 (155%)

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 largest amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses 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 processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.