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Geforce GTX 1080 Ti vs Radeon RX 6800

Intro

The Geforce GTX 1080 Ti comes with a core clock speed of 1480 MHz and a GDDR5X memory speed of 1376 MHz. It also makes use of a 352-bit memory bus, and makes use of a 16 nm design. It is comprised of 3584 SPUs, 224 Texture Address Units, and 88 Raster Operation Units.

Compare those specs to the Radeon RX 6800, which has GPU clock speed of 1700 MHz, and 16384 MB of GDDR6 memory running at 2000 MHz through a 256-bit bus. It also is made up of 3840 SPUs, 240 TAUs, and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically, the Radeon RX 6800 should be a bit faster than the Geforce GTX 1080 Ti in general. (explain)

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

Texel Rate

The Radeon RX 6800 will be quite a bit (more or less 23%) faster with regards to AF than the Geforce GTX 1080 Ti. (explain)

Radeon RX 6800 408000 Mtexels/sec
Geforce GTX 1080 Ti 331520 Mtexels/sec
Difference: 76480 (23%)

Pixel Rate

The Radeon RX 6800 should be quite a bit (approximately 25%) better at anti-aliasing than the Geforce GTX 1080 Ti, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 6800 163200 Mpixels/sec
Geforce GTX 1080 Ti 130240 Mpixels/sec
Difference: 32960 (25%)

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

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Radeon RX 6800

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
Manufacturer nVidia AMD
Year March 2017 November 2020
Code Name GP102 Navi 21
Memory 11264 MB 16384 MB
Core Speed 1480 MHz 1700 MHz
Memory Speed 11008 MHz 4000 GB/s
Power (Max TDP) 250 watts 250 watts
Bandwidth 495616 MB/sec 524288 MB/sec
Texel Rate 331520 Mtexels/sec 408000 Mtexels/sec
Pixel Rate 130240 Mpixels/sec 163200 Mpixels/sec
Unified Shaders 3584 3840
Texture Mapping Units 224 240
Render Output Units 88 96
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 largest amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of 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 calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Geforce GTX 1080 Ti

Amazon.com

Check prices at:

Radeon RX 6800

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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