When to up northbridge / MCH voltage?

[beatle]

The sticky doesn't mention when you're supposed to up your MCH voltage. My IP35 Pro and Q6600 are humming along nicely at 9x360, 1.4v (bios) but of course I'm looking for more. My hottest core is in the low 60s after a night of Prime crunching. I seem to hit a wall, however, even at 365 where Vista will just BSOD. I've never seen any Prime errors. I've kept my memory out of the equation by running it slowly @ 1:1. What other steps can I take to get the most out of this chip? If this is all I can get, that's fine, but I want to know that I've tried everything.

 

[SerpentRoyal]

Raise Vcore. Use 5-5-5-15-2T timing. Run Memtest86 test #5 for 50 loops to check RAMs. You may want to bump NB up by one or two notches if you have so so RAMs. I've seen IP35-E/Q6600 @ 3.7GHz with default NB voltage.

 

[beatle]

I'm not sure why I'd need to touch my ram if it's running slower than advertised. At 1:1, it's only going @ 720mhz. It's rated for 800.

What's a safe Vcore?

I'm using 2x1gb of OCZ Platinum PC6400

 

[SerpentRoyal]

Those modules will normally require a small bump in NB.

 

[The-Noid]

It all depends on the strapping of the NB and not the ram.

You can run up to 1200 mhz without an increase in NB voltage. You may not end up the tightest strap.

On ASUS boards p35/p965 it is harder to run 390-400 than it is to run 401 as the strap changes.

If you are running at the end of a strap either 200,266,333 or 400 you will notice stability goes way down.

At 360 1:1 for ram at 720 you will not have to worry about an increase in NB voltage.