P5Q-Dlx, Disable Following in BIOS: c1E, Max CPU Value Limit & Intel Virtualization. This will stop the CPU from throttling down and up and give you a steady base line to OC from. I am like you, I only have a CPU Ratio of 8.5 max on this Q9550; that being said, try these settings. AI OC Manual, CPU Ratio 8.5, FSB Freq 468 which = 3.978GHz! PCIe Freq 100 (DeFault), FSB Strap to NB AUTO (DeFault), DRAM Freq DDR2-1152. All else AUTO. I have been running this way doing BenchMarks with OCCT, Orthos & SuperPi for hours on end! Good Luck, enjoy. --