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GeForce RTX 2080 SUPER vs Geforce GTX 1080 Ti

Intro

The GeForce RTX 2080 SUPER comes with a clock speed of 1650 MHz and a GDDR6 memory speed of 1937 MHz. It also makes use of a 256-bit bus, and uses a 12 nm design. It is made up of 3072 SPUs, 192 TAUs, and 64 Raster Operation Units.

Compare all of that to the Geforce GTX 1080 Ti, which has core clock speeds of 1480 MHz on the GPU, and 1376 MHz on the 11264 MB of GDDR5X memory. It features 3584 SPUs as well as 224 Texture Address Units and 88 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the GeForce RTX 2080 SUPER should perform a little bit faster than the Geforce GTX 1080 Ti in general. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
Geforce GTX 1080 Ti		495616 MB/sec
	Difference: 12288 (2%)

Texel Rate

The Geforce GTX 1080 Ti should be just a bit (about 5%) better at AF than the GeForce RTX 2080 SUPER. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
GeForce RTX 2080 SUPER		316800 Mtexels/sec
	Difference: 14720 (5%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 1080 Ti is the winner, and very much so. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
GeForce RTX 2080 SUPER		105600 Mpixels/sec
	Difference: 24640 (23%)

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

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GeForce RTX 2080 SUPER

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Geforce GTX 1080 Ti

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	GeForce RTX 2080 SUPER	Geforce GTX 1080 Ti
Manufacturer	nVidia	nVidia
Year	July 2019	March 2017
Code Name	TU104-450-A1	GP102
Memory	8192 MB	11264 MB
Core Speed	1650 MHz	1480 MHz
Memory Speed	1937 GB/s	11008 MHz
Power (Max TDP)	250 watts	250 watts
Bandwidth	507904 MB/sec	495616 MB/sec
Texel Rate	316800 Mtexels/sec	331520 Mtexels/sec
Pixel Rate	105600 Mpixels/sec	130240 Mpixels/sec
Unified Shaders	3072	3584
Texture Mapping Units	192	224
Render Output Units	64	88
Bus Type	GDDR6	GDDR5X
Bus Width	256-bit	352-bit
Fab Process	12 nm	16 nm
Transistors	13600 million	12000 million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 12	DirectX 12.0
OpenGL Version	OpenGL 4.6	OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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