Comparison of PNY GeForce GTX 1080 video card vs GALAX GeForce GTX 1080 Ti EX OC video card by specifications and benchmarks. PNY GeForce GTX 1080 runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card GALAX GeForce GTX 1080 Ti EX OC runs at 1.531 GHz+ 3 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 180 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.