Comparison of Colorful iGame GeForce GTX 1080 X-TOP-8G video card vs Gainward GeForce GTX 1080 Phoenix GS video card by specs and benchmarks. Colorful iGame GeForce GTX 1080 X-TOP-8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card Gainward GeForce GTX 1080 Phoenix GS runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The weight is different, -- vs --. The TDP of the first video card is 180 W, and the second is 180 W . Compare the benchmark results to find out which video card is better.