I'm having an issue with my unlocked 720BE on GA-MA790GP-UD4H.
It's been Prime95-64bit and OCCT stable at 3.6ghz (15x240), but I'm getting sound corruption under Vista 32 and 64 with both SB X-Fi and Realtek HD. With SB X-Fi, I don't hear sound 95% of time, but with Realtek, I do have sound, but randomly corrupted. Also, display seemed slightly corrupted under Vista 32. I have the latest Forceware driver install from nVidia.
I've tried all sorts of settings in the Bios, running FSB at defalut 200mhz, lowering NB and HT to default, and increasing voltage to CPU NB vid, SB and NB voltage.
If I don't unlock the 4th core, then everything is fine. Any thoughts?