GeForce GTX 1080 vs GeForce RTX 2080 SUPER

Intro

Compare those specifications to the GeForce RTX 2080 SUPER, which has a core clock speed of 1650 MHz and a GDDR6 memory frequency of 1937 MHz. It also makes use of a 256-bit bus, and makes use of a 12 nm design. It features 3072 SPUs, 192 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 70 Watts (39%)

Memory Bandwidth

In theory, the GeForce RTX 2080 SUPER will be 55% faster than the GeForce GTX 1080 overall, because of its greater data rate. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
GeForce GTX 1080		327680 MB/sec
	Difference: 180224 (55%)

Texel Rate

The GeForce RTX 2080 SUPER will be much (about 23%) better at AF than the GeForce GTX 1080. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
GeForce GTX 1080		257120 Mtexels/sec
	Difference: 59680 (23%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce RTX 2080 SUPER is a better choice, but it probably won't make a huge difference. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
GeForce GTX 1080		102848 Mpixels/sec
	Difference: 2752 (3%)

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 largest amount of data (in units of MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the ability to reach the maximum fill rate.