Recommened voltages for 1st overclock

I would manually set them all to stock voltages, and then work you OC. If you dont know the stock voltages, look them up.

An reason why its important to know your stock voltages is for example on my MB, stock dimm voltage is 1.8, but my bios doesnt say that, it only shows +'s or -'s to that. I had to look up the standard voltage. My memory, runs at 2.2v standard.

Depending on how much OC you get, you can start tweaking your voltage just a bit to see if you get the system to boot/run stable.

Its a long process and every computer is different and each OC require different tweaks at various steps.

For example, I can run my system with super low vcore of 1.125 at 3.0Ghz. To get to 3.25 or higher, I really had to move to near stock vcore. Its really a big move in terms of vcore for just to go from 3.0GHz to 3.25Ghz

I wouldnt worry about it. 11hrs is good. I never manage to get over 8hrs

Yeah I just finished the oc on my cpu. Up to 3.6 Ghz Luckily enough I 'only' have to use 1.5 volts But I can't go any higher and a 50% oc is good enough

If you get a fatal error anytime thats not a good thing! If you can't run Prime95 for 24 hours without errors its not stable at all. "xringx is mistaken about the fatal error being ok." If your motherboard is an X38 then heres what your stock setting should be. If your at 400 FSB like I am the Northbridge is at 1.41v and my CPU Vcore 1.33v with all other setting at stock. Heres a review of the X38 chipset.

Xbit Labs http://www.xbitlabs.com/articles/m [...] s-p5e.html


By systemlord at 2007-12-17

I think 24 hours is excessive.

8 Hours Small FFT, 12 Hours Blend with no errors and it's fine.

I've never had an issue with any system that passed that test even having been left on for weeks at a time.

I didn't make up my own rules, I spoke from personal experience. In my personal experience I've found no difference in testing for 24 hours of Small FFTs versus 8 hours of Small FFT + 12 Hours of Blend for stability of daily usage.

I didn't say 1 Fatal Error was ok. I said in my opinion 24 hours is excessive. I really don't care what the software manufacturer says. I used their guidelines for a while, and now I've found my own that work. I haven't had any issues with this system that failed a 2.5 hour Prime95 Small FFT. I bumped up the vCore 1 notch and it ran 8 Hours Small FFT followed by 12 Hours Blend without an error. It has now been on for 2 weeks without a shutdown or restart running F@H in the background as well as encoding and playing games.

I apologize if my standard isn't as good as yours, however it works for me and hasn't led me wrong yet.

My bad, semantics. I'm sorry my standards aren't as high as the developers of Prime95.

When my computer crashes and is totally unstable I won't be here crying about how it passed on my standard. But hey it hasn't.