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How to get NB @ 2600Mhz?

post #1 of 50
Thread Starter 
Okay, So everytime I try and set My Northbridge to 2600Mhz, It does the whole "Requesting USB Device for BIOS Replacement" and I reset CMOS and I'm good to go. The Highest I've ever gotten my Northbride is 2500Mhz @ 1.179V's - Should I bump up the voltage to something like 1.183V's - 1.186V's to acheive 2600Mhz NB?

BTW, That is the voltage for the CPU-NB Frequency (Northbridge).

I'm trying to get as much performance my PC can give.
post #2 of 50
i always thought 1.3 was a safe NB voltage, i have mine at 2900 at 1.318 and its fine.
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post #3 of 50
You need more vNB.

I need at least 1.35 for ~2.8GHz NB on my 555BE. Some may do better, some worse, but very few will do 2.6GHz with only 1.18v.
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post #4 of 50
C2 or C3 stepping CPU? I believe 550s were C2 only yea? That means 2600mhz might not even happen for you. But you're going to need a good bit more CPU-NB voltage, try around 1.4v and see where that gets you. Prime95 blend is good to test for stability when you OC the NB frequency.

The "safe" voltage for it is the same as CPU vcore - so I would consider up to 1.55v but it usually doesn't scale much past 1.45v so I haven't really seen too many people run it above that.
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post #5 of 50
CPU-NB Voltage is for the memory controller.

You want the NB Volatge and set it at 1.4v
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post #6 of 50
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post
C2 or C3 stepping CPU? I believe 550s were C2 only yea? That means 2600mhz might not even happen for you. But you're going to need a good bit more CPU-NB voltage, try around 1.4v and see where that gets you. Prime95 blend is good to test for stability when you OC the NB frequency.

The "safe" voltage for it is the same as CPU vcore - so I would consider up to 1.55v but it usually doesn't scale much past 1.45v so I haven't really seen too many people run it above that.
550 BE's Were only C2 Stepping CPU's.

I'm scared to throw the voltage Up and beyond what the board supports. It supports a max of 1.38V's, and that's far from the 'safe' zone. This is my only motherboard, and I can't afford to blow out my only PC.

I'm already pushing the Volts out of the safe zone, but from 0.005v's from the safe zone.
post #7 of 50
Quote:
Originally Posted by Nvidia-Brownies View Post
550 BE's Were only C2 Stepping CPU's.

I'm scared to throw the voltage Up and beyond what the board supports. It supports a max of 1.38V's, and that's far from the 'safe' zone. This is my only motherboard, and I can't afford to blow out my only PC.

I'm already pushing the Volts out of the safe zone, but from 0.005v's from the safe zone.
Shame you bought an MSI 3+1 phase unheatsinked board. To be honest I would be scared to run 3.9ghz too, but since it's only a dual core you might be okay.
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post #8 of 50
Quote:
Originally Posted by Rocket Dog View Post
CPU-NB Voltage is for the memory controller.

You want the NB Volatge and set it at 1.4v
theres two different voltage. nb and cpu-nb. cpu-nb is the memory controller while the other nb controls your pci express lane and memory and others. what he has to do is set the cpu-nb if he wants to get a higher frequency. dont get those two mixed up.
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post #9 of 50
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post
Shame you bought an MSI 3+1 phase unheatsinked board. To be honest I would be scared to run 3.9ghz too, but since it's only a dual core you might be okay.
Well It was either this or a Dead motherboard + no working system. It was my old board I had before my Asus M4A785-M Blew up. that, and I had an NZXT Vulcan at the time so If I wanted a really high end board, it would cost me tons more for a High-end M-ATX Board that had the exact features of a mid-range ATX Motherboard, and at a cheaper price.

I'm not afraid of 3.9Ghz. I have a 80MM fan sitting directly over my VRM's, so I'm fine. I Ran Two threads of P95 for five hours @ 1.538V's/4Ghz just fine. No burn marks, no smell, not a single issue. This board has solid jap caps and Icy choke Mosfets. It can take much more voltage than an average 3+1 Board.

That, and this is MSI's best board known not to fail under High-voltage. It's only been recorded for one failure, but that Idiot took a 1055T 125W and overclocked it. Check xd_1771's signature about Mosfet/VRM's.
post #10 of 50
Quote:
Originally Posted by sleepergsr View Post
theres two different voltage. nb and cpu-nb. cpu-nb is the memory controller while the other nb controls your pci express lane and memory and others. what he has to do is set the cpu-nb if he wants to get a higher frequency. dont get those two mixed up.
No, He's wants to overclock his NORTH BRIDGE to 2.6Ghz... Not his RAM

So He needs to leave the CPU-NB which is the IMC alone and adjust the NB voltage.
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