The w7 was seeing only 2GB RAM after the flash, but the CPUz was reporting 3-channels and 6GB. Something fishy was going on with the RAM, but a reboot & reset has fixed the problem. Everything is back to normal now, and the OC is at least as good as before.
EDIT: Some progress report:
Have been playing with the BCLK (with x19 multi, for now) and getting :
Up to BCLK215 seams to be very easy with no/little need for tweaks.
I get some artifacts on my screen at BCLCK216. Randomly black screen for few sec., and comes back again. My dual-GPU may be to blame, but I'm not sure yet.
My CPU seams to scale optimal up to BCLK222, it needs 1.200v for 4.22GHZ(222x19) but needs at least 1.232v for 4.27GHZ(225x19). Will keeps testing with new BIOS ... .
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