Hi guys I am upgrading my PC, I will be getting Intel I5-4670K CPU /W Noctua NH-D14 Cooler, Corsair TX850 PSU, 2133 Corsair Vengeance 8GB Ram kit, MSI Z87 MPOWER Mobo, And when it comes out, MSI GeForce GTX 780 Lightning ED, But I'm a little confused about the "Unlocked Voltage" of the GTX 780 Lightning as shown here http://event.msi.com/vga/lightning/gtx770.html#OC (Yes i know that it's the GTX 770 but i assume the GTX 780 Lightning ED would have the same features.) I do of-course plan to overclock my GPU, but with the unlocked voltage will it be safe to do so? I know that low to mid-end overclocks will be. But i'm looking to push a high-end overclock, i am just unsure as to if i will damage my GPU. If any one could explain this "Unlocked Voltage" to me it would be greatly appreciated.