Comparison of NVIDIA iGame GeForce GTX 1070 Ti video card vs Gainward GeForce GTX 1080 Phoenix GS video card by specs and benchmarks. NVIDIA iGame GeForce GTX 1070 Ti runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 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.