Comparison of ZOTAC GeForce GTX 1080 AMP Extreme video card vs Colorful iGame GeForce GTX 1080 X-TOP-8G video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 AMP Extreme runs at 1.771 GHz+ 10 % base clock speed and has 8 GB of GDDR5X memory, while video card Colorful iGame GeForce GTX 1080 X-TOP-8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 270 W+ 50 %, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.