For 600FSB+ brute force of high PLL was necessary in order to boot from BIOS, and into Windows. At 533FSB, AUTO PLL (1.83v when measured) was plenty enough, and could go down to 1.56-1.60v without loosing stability. For 550FSB ORTHOS, I just left it alone at AUTO.
I'm very glad, Dino! I hope to see your results soon. What are you running them on - 790i. X48 or P45? Thanks!
ASUS, of course. From my experience, currently official 0401 is a very good BIOS. I'm sure I don't have to tell you anything as you've been already running high speeds on X48, but stick with 0401 for now, and play with CPU GTL Ref as well as skewing signals. It's a solid BIOS, and a lot can be acomplished on this motherboard without any hardware modifications at all
Skewing signals per DIMM implemented in 0503 is mainly an attempt to figure out how far 4-up configuration could be pushed on this motherboard, but also improving stability of A1 & B1 DIMM sockets (orange ones) at very high frequencies. There is good indication it might help...
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