Duke!
I'm really glad to see that your DD unit from Drew worked out, and that you're able to bench this high already

. I can't comment on details, times, or your memory divider since I'm visiting from dial-up, but I should be able to within a couple days. 1.8v sounds just about right for the temps that I expect you'd be getting anyways; but could you let us know temps just to double check?
I'd "guess" that 1.8v is good for the sort of temps that you're getting, as long as you don't bench TOO much at those voltages. 1.85 or maybe even 1.9v is totally doable for some QUICK CPU benchies.
Can't wait to see your scores

Good luck man,
Eli