you're getting that with 1.31 vcore? I'm impressed... my 5000+ isn't really stable past 3180 MHz.
How stable is it? If you got your 5000+ past 3200 MHz with no stability issues, then you win, in my book.
Per mancunian's suggestion, you should probably lower your HT multiplier. I think it's good practice to keep HT not much more than 1000 MHz, but as long as it is stable... If you set it to 4X (or 800 MHz, depending on your Bios), then that would bring your HT back to 1000 MHz, which is recommended operation frequency.
Addendum:
What motherboard are you using? I'm kind of jealous now
And regarding your PSU, as long as you're stable, it's probably OK. I would think the X2 would get maxed out on OC before your PSU can't put out anymore.