Hi folks, this probably has a simple solution but it's eluding me. I've built a new system for the first time and everything is running nicely but I can't figure out why my GTX580 won't move beyond 405mHz in GPU Tweak or anything else for that matter. Thanks in advance for any leads!
ASRock Fatal1ty P67 Professional Intel P67
Intel Core i7-2600K
Corsair 16 GB Vengeance Low Profile 1600mhz PC3-12800
Cooler Master HAF X
Corsair Enthusiast Series 850-Watt