Comparison of GIGABYTE GeForce GTX 1080 Ti Turbo 11G video card vs Gainward GeForce RTX 3090 Phantom GS video card by specifications and benchmarks. GIGABYTE GeForce GTX 1080 Ti Turbo 11G runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce RTX 3090 Phantom GS runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 280 W+ 12 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.