Comparison of ZOTAC GeForce GTX 1080 Ti Mini video card vs Gainward GeForce RTX 3090 Phantom video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 Ti Mini runs at 1.506 GHz+ 2 % base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce RTX 3090 Phantom runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 250 W, and the second is 370 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.