My Celeron430 can only oc@3.20Ghz. vcore1.400v with P5B Deluxe. My mobo have a problem about vcore for this cpu, the maximum in BIOS is 1.700v but in the windows is 1.400v.

http://valid.x86-secret.com/show_oc?id=204662

Celeron430 with HR-01
P5B Deluxe rev.C2 BIOS1101
2x1GB G.Skill DDR2-800 HZ
8800GTS 320MB
WD Raptor 10000rpm
Zippy 500 Watt