Comparison of Sapphire Nitro+ Radeon RX 6900 XT video card vs MSI GeForce GTX 1080 Ti GAMING X 11G video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card MSI GeForce GTX 1080 Ti GAMING X 11G runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 340 W+ 13 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.