Comparison of ASRock Radeon RX 6800 Phantom Gaming D 16G OC video card vs GIGABYTE GeForce GTX 1660 TI OC 6G video card by specifications and benchmarks. ASRock Radeon RX 6800 Phantom Gaming D 16G OC runs at 1.850 GHz+ 9 % base clock speed and has 16 GB of GDDR6 memory, while video card GIGABYTE GeForce GTX 1660 TI OC 6G runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.