Comparison of KFA2 GeForce GTX 1080 Ti video card vs ZOTAC Gaming GeForce RTX 3090 Trinity OC video card by specifications and benchmarks. KFA2 GeForce GTX 1080 Ti runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card ZOTAC Gaming GeForce RTX 3090 Trinity OC 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 350 W. Compare the table of benchmark results to find out which graphic card is better.