Right im telling everyone about this now because it annoys me that no one knows about this program called "coolbits"
This unlocks your professional settings inside your drivers so when you enter the settings it looks like this
All you do is click "detect optimal settings" (do it three times to get the highest possible) and bam! Your card has been overclocked without you having to do anything+ its stable and fast!
Heres the link..UPDATED
Its just a registration entry. Let it enter it into the register and restart your PC. When you have it booted back up it will have all the settings unlocked
(dont blame me if your PC bursts into flames, blows up etc. DO IT AT YOUR OWN RISK) Never gone wrong with me