Here are my settings for 10x450 24/7 (H2O)
RAM @ 1800 7-6-5-20 1T

CPU volt: 1.475
CPU GTL: x0.67
CPU PLL: 1.50
FSB TV: 1.40
DRAM: 1.90
NB: 1.65
NB GTL: x0.67
SB: 1.05
COCV: Auto
LLC: Performance

(Fan on NB btw)