Comparison of Sapphire Toxic Radeon RX 6900 XT Extreme Edition video card vs EVGA GeForce GTX 1080 SC GAMING video card by specifications and benchmarks. Sapphire Toxic Radeon RX 6900 XT Extreme Edition runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card EVGA GeForce GTX 1080 SC GAMING runs at 1.708 GHz+ 6 % base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 430 W+ 43 %, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.