Asrock P55 Deluxe Mobo with Core i5-750 (2.66 Ghz) CPU and 4Gb G. Skill Pi ddr3-2400 (8-11-8-28-2N) Ram.

The CPU is running BCLK 175, PCIE 100 Cpuid 3682. Ram 1753 (9-9-9-24-2N) Cpuid.
Which bios settings should I use to get a faster and stable overclock? Which are the best tools to measure stability.
Thanks for your time,