MSI Afterburner. If you reach a point where you can't set it any higher, save those setting, shut it down, and then restart it, and you will be able to move it higher.
Well I tried that program now and it won't let me go above 920 on the core still, at-least I can under clock the mem with it and get it to run a little bit cooler. I knew the bois was probably going to be locked when I got this card but I still got a great oc out of it, I don't think I wana change the bois unless I could safely get 400+ mhashes