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What is limiting my OC?

zCypher

zCypher

Diamond Member
I seem to have hit a wall at 3.9GHz with my 1100T.
I can get it to 4.0, but it isn't stable enough to leave it there (can crash/reboot after only a few minutes of Prime95).

At 3.9GHz it can pass overnight Prime95 and so far LinX testing hasn't bothered it either.
Of course, right as I typed that LinX told me it stopped because of an error at 17 minutes. lol. Max temp during that test was 54c.

Min voltage 1.22v, max voltage 1.45v (talking about vcore).

Hardware is 1100T, Biostar TA870U3+, EVO 212

Initially I thought I couldn't pass 3.9 because my fan was set to "smart" or whatever, it was running at very low speed even when benchmarking it 😛 so I set the thing to run max speed all the time, but still can't go much more.

I like my CM 690 case, but the whole front and top is all mesh, maybe a case that doesn't have this kind of design would help have better airflow out the back or something? What do you think are the weak points herE?
 
It's most likely just the limit of your chip, might be the motherboard but it's most likely the Phenom, they don't all reach 4.0Ghz stable. My 1090T can't reach 4.0Ghz even with 1.525V, while I have a 965 that does it with 1.475V stable, despite having a much cheaper motherboard.

You could try upping your voltage to 1.5, and more voltage to the L3/northbridge may help improve stability too.
 
Thanks for the input, guess that pretty much answers my question and nullifies any value in looking for improved motherboard and cooling.

I did try upping the voltage a bit, but I was not comfortable with the immediate temps I was seeing when benching at 4.0 with more voltage, so there's no way it would be an acceptable permanent OC even if it didn't crash. I don't want to see temps way over 60c on this chip.

Thanks again for the input. I will enjoy my 3.9 for a long time still, I think. 😀
 
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