Originally Posted by chakku
9945, then 1401 and now 1403. As far as memory compatibility goes they're all the same. Before 9945 I hadn't tried these specific timings but I couldn't really get to 2933/3066 before that BIOS version anyway (The board had 1201 when I bought it and I went straight to 9945).
Ok, all of those bioses are equipped with the newer PMU firmware (01.50 a.k.a "46").
It's a long shot, but you could try if the older firmware (01.46 a.k.a "42") works any better.9920-SP42M
No other changes besides the PMU FWs.Use Flashback to update.
Leave all of the DRAM related parameters to default settings for starters, except the ProcODT.
I would start testing from 80Ohms.