Comparison of Colorful GeForce GTX 1060 SI-6G-V video card vs GALAX GeForce GTX 1080 EX OC video card by specifications and benchmarks. Colorful GeForce GTX 1060 SI-6G-V runs at 1.506 GHz base clock speed and has 6 GB of GDDR5 memory, while video card GALAX GeForce GTX 1080 EX OC runs at 1.657 GHz+ 3 % base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 120 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.