Comparison of Colorful iGame GeForce GTX 1070 SI-8G-V video card vs GIGABYTE GeForce RTX 2080 Ti Windforce OC 11G video card by specifications and benchmarks. Colorful iGame GeForce GTX 1070 SI-8G-V runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GIGABYTE GeForce RTX 2080 Ti Windforce OC 11G runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.