I seem to be running into a wall above 450 Mhz FSB.
I'm running the DS3 with an E6400 and Patriot 2x1gb DDR2-667 Cas4 1.8V.
I've tried the F5, F7, F8i, and F10 BIOS's and have generated very similar results with each.
I don't believe my RAM is holding me back, as I can set my FSB to 420 Mhz and do the 5/4 memory divider to make the RAM run at DDR2-1040 Cas5 @ 2.2V and its Orthos stable. The system is also Orthos stable with a 430 Mhz FSB with the 1:1 divider for DDR2-860 with 4-4-4-10 timings and 2.0V.
I've disabled everything in the rest of the BIOS that was unnecessary and have played around with the PCI-E frequency and have upped the voltages a bit (VDimm +0.2-.4, FSB +.2, VMch +.2, Vcore 1.45-1.475) but can't reliably push it over 450 FSB...or make it Orthos stable at 450.
Is there anything else I should try to push it, or has my chip or mobo hit a wall at 450. I have a very early e6400...one that came around a time when it seemed like the sky was the limit with those chips, so I feel that it probably can go a lot further...