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MSI 890FX board CPU core voltage SPIKE under LOAD ???? - Page 2

post #11 of 29
Quote:
Originally Posted by thestef View Post
Yeah the BIOS doesn't have any option to disable LLC or Vboost... I checked every single option in there. Like I wrote above, I found more then 1 issue liek this online (google search) with no resolution. I just figured I would ask in case other users on this forum have the same board.

I'll have to set it lower for now, I just hope I can still get a reasonnable OC this way.
Yes, just tune down, that's the idea behind Vboost- to get stable OC, while not frying the chip with unneeded high volts during idle.

After OCing, you should find the lowest stable volts anyway - (for example)no need to fry it with 1.5, where it can run at 1.44.

In your case - don't just set the Vcore at something. After you find a OC that you're happy with (be it 4Ghz or whatever), start lowering to find the min stable Vcore, and Vboost will do its job.
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post #12 of 29
Thread Starter 
That sounds like a plan,

I know I can get it OC's without any voltage increase to 3.8/3.9Ghz without any issues, but maybe thats just because of the Vboost kicking in like you just explained.

I've been having issues getting a stable OC over 4.0Ghz, is it possible the CPU is getting to much voltage min voltage being at 1.5V and with Vboost up to 1.63V ??

I'll try this out tonight and go from here.
Edited by thestef - 4/26/11 at 8:13am
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post #13 of 29
LLC settings!
post #14 of 29
Quote:
Originally Posted by thestef View Post
is it possible the CPU is getting to much voltage?
Yes, I've heard that too high voltage can cause instability, even if temps are normal.
However, I can't confirm that from experience. It may be true.
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post #15 of 29
Quote:
Originally Posted by IOSEFINI View Post
If you dont have LLC option(enable, disable) in your BIOS, is enabled by the manufacturer.
Set your BIOS voltage lower. Most of 1090 dont need 1.50V(at full load) for 4GHz
Wisdom. I'm only at like 1.37 I believe (havent checked in a month).
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post #16 of 29
Thread Starter 
Quote:
Originally Posted by LocKDowN2222* View Post
Wisdom. I'm only at like 1.37 I believe (haven’t checked in a month).
Ah a fellow MSI 890FX board owner.... I guess this is definitely my problem then, to much voltage causing 4.0 and higher instability issues because of Vboost.

I'm assuming your core voltage is jumping from 1.37 to aprox 1.5v becuse of Vboost when your CPU is under load? I guess 1.5v that would makes sense in order to run an OC of 4.1Ghz.

What is the stock voltage anyway’s for these CPU’s?
Edited by thestef - 4/26/11 at 8:31am
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post #17 of 29
If you lower your voltage, Vboost(LLC) may not add 0.13V.
something like 1.35(BIOS) will be like 1.42V at full load. At least thats how works on my board. Higher the Voltage( set in BIOS), higher the Vboost at load

I need 1.345V at full load for 4GHz (1.3125V BIOS), but I have a good cooling system which helps me to lower my voltages
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post #18 of 29
Thread Starter 
I wonder if this is why MSI had\\has a bad reputation for bad boards, people not knowing about the Vboost and burning out boards and chips ????

I think I have decent cooling, OCZ Vantage or Vendeda... can't remember the exact name. At 1.63v my CPU temp never went past 57C, but that was running prime95 only for 15minutes.

I’ll try these lower voltage settings tonight and I’ll respond back to this thread to let you guys know what happens.


I just hope I didn’t hurt the chip to much with the 1.63v core.
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post #19 of 29
Quote:
Originally Posted by thestef View Post
I wonder if this is why MSI had\\has a bad reputation for bad boards, people not knowing about the Vboost and burning out boards and chips ????

I think I have decent cooling, OCZ Vantage or Vendeda... can't remember the exact name. At 1.63v my CPU temp never went past 57C, but that was running prime95 only for 15minutes.

I’ll try these lower voltage settings tonight and I’ll respond back to this thread to let you guys know what happens.


I just hope I didn’t hurt the chip to much with the 1.63v core.
No, MSI's bad rep is because of all the exploded MOSFETs. No kidding.
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post #20 of 29
Not only that, terrible support as well. I can tell you that, because I had a msi 890fx board. LLC is present in almost every mainstream and high end board. Don't go 1.63Vcore, that's way too much unless you are doing benchmarks with dry ice.
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