Comparison of ZOTAC GeForce GTX 1080 Ti Founders Edition video card vs Colorful iGame GeForce GTX 980 Ti KUDAN video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 Ti Founders Edition runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card Colorful iGame GeForce GTX 980 Ti KUDAN runs at 1.203 GHz+ 20 % base clock speed and has 6 GB of GDDR5 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.