**Official ABIT IP-35 Pro Review/Overclock/Guide Thread**

[Ace-a-Rue]

What exactly does ICH and ICHIO control? What are some recommended voltage choices for both of these?

ICH is the core voltage to the SB.

ICHIO is I/O voltage of the SB.

MCH and ICHIO are the two most important voltages along with Vcore and Vdimm to overclock...CPU VTT is a secondary adjustment

[yasoumalaka]

ICH is the core voltage to the SB.

ICHIO is I/O voltage of the SB.

MCH and ICHIO are the two most important voltages along with Vcore and Vdimm to overclock...CPU VTT is a secondary adjustment

Yep I upped the MCH to 1.41 and now I have passed 31 passes of test 5 from memtest. I'll prime one blend three small ffts and see where I get.

[maxwedge]

ICH is the core voltage to the SB.

ICHIO is I/O voltage of the SB.

MCH and ICHIO are the two most important voltages along with Vcore and Vdimm to overclock...CPU VTT is a secondary adjustment

So why don't I need any ICHIO? Even 500x8 I didn't need any although that was only 32M tested. Needed more cpu vvt though. Maybe it's a quad thing???