Comparison of Colorful iGame GTX 980 Ti TOP video card vs ZOTAC GeForce GTX 980 Ti video card by specifications and benchmarks. Colorful iGame GTX 980 Ti TOP runs at 1.127 GHz+ 13 % base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 980 Ti runs at 1.000 GHz 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.