Comparison of NVIDIA GeForce GTX 1080 Ti video card vs GALAX GeForce RTX 2080 Ti SG (1-Click OC) video card by specifications and benchmarks. NVIDIA GeForce GTX 1080 Ti runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card GALAX GeForce RTX 2080 Ti SG (1-Click OC) runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.