Comparison of ASUS TUF Gaming GeForce RTX 3090 OC video card vs Gainward GeForce RTX 3080 Ti Phantom video card by specifications and benchmarks. ASUS TUF Gaming GeForce RTX 3090 OC runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory, while video card Gainward GeForce RTX 3080 Ti Phantom runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 350 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.