Comparison of Colorful iGame GeForce GTX 1080 U-TOP-8G-V video card vs GIGABYTE GeForce GTX 1080 Ti Gaming OC 11G video card by specifications and benchmarks. Colorful iGame GeForce GTX 1080 U-TOP-8G-V runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card GIGABYTE GeForce GTX 1080 Ti Gaming OC 11G runs at 1.518 GHz+ 3 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 180 W, and the second is 280 W+ 12 %. Compare the table of benchmark results to find out which graphic card is better.