overclocking i7 970 bsod

[bluethunder]

im trying to get my i7 970 to 4ghz(200x20) on a msi big bang xpower motherboard it runs in prime95 for about 20 minutes then i keep getting the bsod with error code 7f, that is the only one i have seen, can someone please lend me some advice as to how to fix it

all the settings i have changed

my bclk is 200

multi 20

ram timing 9-9-9-24 @ 1.5v 1600mhz

qpi freq 4.8gt

cpu vdroop low vdroop

cpu voltage 1.312v

cpu pll 1.88v

qpi vdroop low vdroop

qpi volt 1.27v

ioh volt 1.25v

dram volt 1.5v

spread spectrum disabled

eist disabled

cstate disabled

c1e disabled

over speed disabled

HT on

execute bit support disabled

cpuid max val off

 

[Rasmus66]

Lower your pll voltage for a start 1,88 is way to high.

Cpu voltage some ok for 4 ghz but you need to bump the QPI voltage up a bit 1,32-1,35 volt should be enough

 

[bluethunder]

what do you suggest i set my pll to?

 

[Rasmus66]

Default 1,8 volt.

 

[bluethunder]

alright thank you ill try it out and get back to you, do you have any idea what the bsod error code 7f means though?

 

[bluethunder]

IT WORKED!!!! thank you so much!