Comparison of Colorful iGame GeForce GTX 1070 SI-8G-V video card vs ASUS TUF Gaming GeForce GTX 1660 TI OC video card by specifications and benchmarks. Colorful iGame GeForce GTX 1070 SI-8G-V runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card ASUS TUF Gaming GeForce GTX 1660 TI OC runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.