What is the +3.3V, +5v, +12V? My +3.3V only around 1.89V? How do i raise it? will this affect OC?

3.3v, 5v and 12v are all from your psu,

you cannot raise the 3.3v. and no, it does not affect oc directly because the cpu draws 12v

if your using a software to read the output, it is as inaccurate as you driving blindfolded.

for accurate readings, use a multimeter instead.

where did u get the reading? it's either your software monitoring tool read the wrong sensor, or your power supply is sucky.

i think the +3.3V is reading the DDR2 voltage which is around 1.80~1.90V

Sucky? At 1.8v on the 3.3v line the PC would not boot for sure. All the high speed data lines depend on it.

Defintely its a case of the software not reading the monitoring chip properly. Monitoring chips aren't terribly accurate to start with, but they're nowhere that bad.

I got it. Should be software problem. I will try use other software to measure the voltage. Thanks

you can read it in your bios screen also