Re: Overclocking not sticking
Try the latest release of ATi Tool. I had no problem OC'ng my GTX to 650/2100 with it.
If it still does the same thing after that, check your PSU.
i7-2700k @ 5.0 GHz
Nvidia GeForce 570 2.5GB Tri-SLI
Asus P67 WS Revolution (Tri-SLI)
OCZ Vertex SSD x 4 (Raid 5)
G.Skill 8GB DDR3 @ 1600MHz
PC Power & Cooling 950W PSU