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MSI 870A-G54 Safe CPU-NB Voltage?

post #1 of 8
Thread Starter 
Hi Guys,

I currently have my CPU-NB at 2.6ghz / 1.233volts. This is stable 24/7.

However if I bumb this up to 2.8ghz my system is not stable so I want to increase my CPU-NB voltage to get it stable (naturally).

Normally I would go ahead and do this as I'm sure it's safe up to at least 1.3v, but when increasing the voltage in my BIOS it highlights red (not recommend) at 1.241v.

This has made me a little cautious as on all the other settings it does not go red until you select obviously dangerous settings.

Shall I ignore this warning and see if I can get the CPU-NB stable at 2.8ghz / 1.24-1.25v?
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post #2 of 8
CPU-NB tolerance is about the same as the CPU on a good motherboard and good aircooling. Unfortunately that is not a very good motherboard for overclocking high TDP processors on and that is not a very good CPU cooler either. Overclocking NB/adding CPU-NB voltage adds to CPU heat and TDP as well.
post #3 of 8
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
CPU-NB tolerance is about the same as the CPU on a good motherboard and good aircooling. Unfortunately that is not a very good motherboard for overclocking high TDP processors on and that is not a very good CPU cooler either. Overclocking NB/adding CPU-NB voltage adds to CPU heat and TDP as well.
Hmmmm I will keep tabs on my temps as always, at the moment they're quite low and I feel a small voltage & mhz CPU-NB increase won't hurt. I'm just wondering why this BIOS marks the voltage as unsafe when it's quite low.

So I am correct in thinking the CPU-NB voltage can go beyond this and even higher?
Edited by superste2201 - 2/26/11 at 5:56pm
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post #4 of 8
4+1 Power regs on that, careful OC'ing it dude.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by spleenharvester View Post
4+1 Power regs on that, careful OC'ing it dude.
Lol I know...... It's a budget rig, I'm gunna hold out upgrading until bulldozer is out.

My temps are ok however, VRM/CPU/MOBO. I would of just increased the voltage but the BIOS made me cautious.

From what I have gathered the CPU-NB voltage is still very low on my mobo so I may just increase it to 1.24v-1.25v and see if I can get stable with 2.8ghz CPU-NB, with low temps of course.
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post #6 of 8
@superste2201 - would you mind sharing your OC settings? I have the same motherboard and I currently have my X2 560 with 3 unlocked cores overclocked to 3.7. I have a 120mm fan blowing on the NB heatsink and the MOSFETs. My temps are quite good with my NB temps at 29-31C (yes I know that I need to be cautious with this board). If you could share all of you OC settings I would really appreciate it. Thanks
post #7 of 8
Hi All;

I have two OC 565 unlocked four cores on G54 both air cooled.

1st board = Stable at 4.1

VCore - 1.4375V
Idle Temp - 33C
Load (OCCT) - 56C
http://valid.canardpc.com/show_oc.php?id=1701735


2nd Board = 4,2 Not stable at 4.2 yet
Vcore - 1.4425V
Idle Temp - 34C
Load (OCCT) - 57C
Does not pass Prime yet for 24 hours
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post #8 of 8
4 cores on a G54 is a very very bad idea.
Those VRMs far from capable of handling 4 cores ESPECIALLY with that much of an OC
You should back it down now before some serious consequences! Many failures have occured on that particular board - at least two having hit OCN members with the same board who haven't listened to me.
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