I'd think your pushing your luck there. You might wanna check if XFX has released a new bios for your card. Check for that by pressing
this link. A new bios sometimes does wonders although I might add that it can be dangerous if you never did it before. All these sites keep saying you should read all info and although I usually just click it away, I suggest you read instructions carefully this time before flashing your bios. Feel free to ask anything here btw.
As for the rest, I'd stick with ocíng for now and when your system is still running stable in 2-3 week then think about it again. Good luck :thumbup: