I think this chip could do 1.60v 24/7. It just needs the volts. I can tell it will go higher because it'll prime at higher temps than in the ss. Also, my ambient temps haven't been the greatest. If I could get 60f in here, I could feed it more volts and maybe loosen up rams a bit, it's currently doing 1158Mhz @ PL7.
About your 1.45v 24/7 question, I think if you're already doing 1.40v, the extra .05v isn't going to do any harm. These quads are less voltage sensitive than the duals, it seems. I think plls are what you should look for. I never touch the plls (1.50v) when I'm overclocking 45nm chips. Also, fsbt is reasonable enough, and I've run way higher fsbt volts in the past without breaking anything.
I was in the MIIF thread and read a lot of unhappy posts; seems the P5Q Deluxe is doing better than the ROG board.

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