Comparison of Colorful iGame GeForce RTX 2080 Ti Neptune OC-V video card vs NVIDIA GeForce GTX 1080 Ti video card by specifications and benchmarks. Colorful iGame GeForce RTX 2080 Ti Neptune OC-V runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory, while video card NVIDIA GeForce GTX 1080 Ti runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X 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.