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Geforce GTX 1080 Ti vs Radeon RX 6800 XT

Intro

The Geforce GTX 1080 Ti has a GPU core speed of 1480 MHz, and the 11264 MB of GDDR5X RAM runs at 1376 MHz through a 352-bit bus. It also features 3584 SPUs, 224 Texture Address Units, and 88 ROPs.

Compare that to the Radeon RX 6800 XT, which comes with a core clock frequency of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also uses a 256-bit memory bus, and makes use of a 7 nm design. It features 4608 SPUs, 288 TAUs, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 1080 Ti 250 Watts
Radeon RX 6800 XT 300 Watts
Difference: 50 Watts (20%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6800 XT should theoretically be a small bit superior to the Geforce GTX 1080 Ti overall. (explain)

Radeon RX 6800 XT 524288 MB/sec
Geforce GTX 1080 Ti 495616 MB/sec
Difference: 28672 (6%)

Texel Rate

The Radeon RX 6800 XT is much (about 59%) better at anisotropic filtering than the Geforce GTX 1080 Ti. (explain)

Radeon RX 6800 XT 525600 Mtexels/sec
Geforce GTX 1080 Ti 331520 Mtexels/sec
Difference: 194080 (59%)

Pixel Rate

The Radeon RX 6800 XT is much (approximately 79%) more effective at AA than the Geforce GTX 1080 Ti, and capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6800 XT 233600 Mpixels/sec
Geforce GTX 1080 Ti 130240 Mpixels/sec
Difference: 103360 (79%)

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 GTX 1080 Ti

Amazon.com

Check prices at:

Radeon RX 6800 XT

Amazon.com

Check prices at:

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 GTX 1080 Ti Radeon RX 6800 XT
Manufacturer nVidia AMD
Year March 2017 November 2020
Code Name GP102 Navi 21
Memory 11264 MB 16384 MB
Core Speed 1480 MHz 1825 MHz
Memory Speed 11008 MHz 4000 GB/s
Power (Max TDP) 250 watts 300 watts
Bandwidth 495616 MB/sec 524288 MB/sec
Texel Rate 331520 Mtexels/sec 525600 Mtexels/sec
Pixel Rate 130240 Mpixels/sec 233600 Mpixels/sec
Unified Shaders 3584 4608
Texture Mapping Units 224 288
Render Output Units 88 128
Bus Type GDDR5X GDDR6
Bus Width 352-bit 256-bit
Fab Process 16 nm 7 nm
Transistors 12000 million 26800 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Geforce GTX 1080 Ti

Amazon.com

Check prices at:

Radeon RX 6800 XT

Amazon.com

Check prices at:

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.

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