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What takes more core voltage?

post #1 of 6
Thread Starter 
Ok, I still have hope at hitting at least 4GHz with my Thuban, and I know this chip can run at 4.2GHz (which burned up my mobo), so now I'm looking at a trying to hit 4.0GHz with the minimum amount of vCore. At the moment the chip is running at 3.75GHz with a vCore of 1.336 (this was just a blind increase, I don't know exactly how much the chip wants to run at 3.75GHz), currently 4 hours Prime stable, Prime is still running at the moment. My question is what would require less voltage, FSB at 300 with a multiplier of 13.5 (4050MHz) or a FSB of 289 with a multiplier of 14 (4046MHz)?

The reason being is that I'm still using an MSI mobo which has the same problem as the 790FX (my 890FXA was the replacement), and I don't want to go through RMA again lol.
Edited by avattz - 4/14/11 at 11:56am
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post #2 of 6
Best way to find the answer is try it.
AFAIK, there are no safe voltage.
There are safe motherboards.
post #3 of 6
Thread Starter 
Quote:
Originally Posted by Abs.exe;13125329 
Best way to find the answer is try it.
AFAIK, there are no safe voltage.
There are safe motherboards.

Yea I guess I could just bump up the multiplier by 1 (3.75GHz is 300x12.5) but I fear I might burn up my mobo again, and I need my computer for school work rolleyes.gif
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post #4 of 6
I recommend you don't OC at all. Your board will die again. It is only 4+1 power phase and has low quality VRMs, same as your old board.

You could get some mosfets heatsinks but I still would be wary.
Edited by superste2201 - 4/14/11 at 12:22pm
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by superste2201;13125570 
I recommend you don't OC at all. Your board will die again. It is only 4+1 power phase and has low quality VRMs, same as your old board.

You could get some mosfets heatsinks but I still would be wary.

I know the mosfets are the problem, but not because of the heat. I've seen others run their CPU into the 4GHz with these mobos, thats why I plan to OC but with minimal voltage.
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post #6 of 6
Quote:
Originally Posted by avattz View Post
I know the mosfets are the problem, but not because of the heat. I've seen others run their CPU into the 4GHz with these mobos, thats why I plan to OC but with minimal voltage.
With a x6 core?

It is exactly due to heat, the mosfets get far to hot and blow. The temp of the cpu is totally different.

Mosfets get hotter when they need to provide more power. The x6 is 125w TDP (unless you have the 95w TDP 1055T). This combined with 4+1 power phase and increased voltage on this notorious motherboard is dangerous.

Also remember sometimes the motherboard won't just blow, it will set on fire. I recommend you go here and search for your mobo http://www.overclock.net/amd-cpus/94...hy-choose.html

To answer your question they would both probably require the same amount of vcore, due to the fact that the BIOS doesn't allow precise control and takes steps in vcore.
Edited by superste2201 - 4/15/11 at 3:05am
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