Comparison of SAPPHIRE NITRO+ Radeon RX 6600 XT video card vs EVGA GeForce GTX 1080 Ti SC Hydro Copper GAMING video card by specifications and benchmarks. SAPPHIRE NITRO+ Radeon RX 6600 XT runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card EVGA GeForce GTX 1080 Ti SC Hydro Copper GAMING runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 160 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.