Frustration OCing Pentium D 930

[Forsaken502]

Hey all,

I have a Pentium D 930 (3.0/800) running on a Gigabyte 965p-DQ6 (rev. 1.0)
with 2x1GB sticks of Corsair DDR2-800. I am currently running an overclock of 4.0Ghz @1068FSB with my ram clocked at ~889Mhz @ 5-5-5-12. This is done by setting a 267MHz FSB with a 3.33 divider.

I have currently hit a wall, I can get it past that using the Gigabyte software based OC utility, and by setting it in the BIOS. However, if trying to do a cold boot, the system will fail and I have to wait for the machine to reset to defaults or do it myself. I know people have pushed these chips harder and am looking for any suggestions on things to try to get it higher, I've tried these with no effect:

Bumping Vcore to 1.4v
Northbridge/southbridge by 0.30V
Vmem up to 2.1V
Setting mem divider down to 2.0
Setting timings to auto
Setting timings manually to 6-6-6-20 (stock=5-5-5-12)

The best I can do is 272 performing a cold boot. The CPU multi is locked at 15. The board should be able to handle well past 267.

Any suggestions?

[Babrbarossa]

Hi! Welcome to the forum- what kind of cooling and power supply do you have- and what are your temps like?