Hello all, new to the forum but not new to computers. Been building them for years now and wanting to overclock my latest. I've got a Phenom II 965BE C3 on the ASUS Crosshair Formula IV and I really can't seem to get stable overclocks. I have had it up to 3.8Ghz which seemed stable in almost everything. And i've got it to post and boot on 4.0Ghz. The problem is I can't get it 100% stable.

Heat is not a problem, I have a coolermaster V8 and enough fans to keep the sun cool! So i'm guessing the problem lays somewhere else. RAM is OCZ AMD Black Edition DDR3-1600 but I haven't been overclocking that, infact I down clocked it to 1333 to try and help with stability but still no luck.

Would like to be able to achieve at least 3.8Ghz stable though so anyhelp would be greatly appreciated.

Thanks!

Nathan.