Hey Pimps,

Ok.. i'm pretty familar with Overclocking. I just decided to jump from a 865 chipset SocketT to a 915 Socket T. Mainly, I wanted to get a PCIe video card.

Anyway.. I was overclocking my CPU, and found it out performed better on a 915 then 865 chipset.

Of course, as OC'ing goes, I was tweaking vCore and vDDR. Instead of seeing a typical vAGP found on 865 chipset, I saw vNB.

I was like.. SWEET!!! You can increase voltage on vNorthBrige. I was going to bump it up a bit, but stopped.

I wasn't sure what the safe range was, and How to effectively use it.

I do understand how to increase voltage for CPU and DDR to gain increase stability at higher Mhz.

But how do I use vNB? I mean.. how do I know that the system will benefit for an icrease boost to the North Bridge.

What are the signs that inadequate North Bridge voltage is the issue?

What is the safe voltage for North Bridge on Air Cooling and on Water?

SAD

FYI - this mobo will not post with UTT chips, but my 865 will just fine.

Bump - Any suggestions?

SAD

Ya bro raising the volts on your chipset and/or northbridge will help you gain a higher FSB on these newer Intel boards. It also helps SATA cut out on boards that can't run a really high FSB.


For the actualy seting I would say 1.65 volts should get you a good overclock and will not hurt the chip at all as long as you cool it somewhat well. I had mine up to 1.9 volts before it got so hot all it would do was crash.


It may help by telling us your mobo, I was using an Abit AG8-915 chipset board.

I wil check back later bro.

Hey Spike,

I have an AG8 also. Thanks for giving me general guidelines on how much volts to give the NB.

I am more curious on when to exactly use it. You know when you are OC'ing the CPU. There is a point it starts crapping out. So you give it a bit more vCore and its happy again.

Well.. I'm looking for a similar approach to voltage on the NB. I just don't feel comfortable w/ just arbitarily kicking up the voltage on the NB, w/o knowing whether its needed or not.

I also see in your sig you are at 4.2 Gig on air.

That is SWEET OC. Which Intel Chip are you using, and how stable is it at 4.2? Are we talking Post / Boot / CPUz / SuperPi 1MB / SuperPi 32MB / AM3 / 3dMark / Prime95 / or Dual Prime95 stable?

Just curious. i'm playing w/ my CPU right now.. and i'm at around almost 4.1 with cold boot into Windows and SuperPi 4MB on Air. Haven't played with it much yet. I then threw in my 2.8e and see if I coudl hit 4Ghz with it. So i'll still be playing w/ the 2.8e tomorrow to see what is the max.

ok man.. get back to me when you get a chance. Hoping maybe vNB will help me hit 4.2

SAD