common factors limiting overclocking?

plutoniumman

New Member
Hi all,
I’ve always avoided overclocking for somereason, but now I’m really opening up to it. I’m trying to OC my comp (MSI 890FXA-GD70, AMD Phenom II X4 955 black) and can’t seem to get it past 4 Ghz. I don’t really want to go much faster than that, because 4 Ghz plays my games almost perfectly and seems stable. (never put it under stress test... but it seems to convert videos & do everyhting else just fine; no BSODs or errors yet) I just want to learn what commonly limits how far one can OC his or her PC.

I already know heat is pretty much #1 concern, because of material degradation. (or hot CPUs put out errors...) My CPU never goes higher than 56˚C under full load. Is that an acceptable temperature for AMD? Also, what causes the CPU temperature to increase more? Clock speed increase, or over voltage?

I know increasing voltage helps stability at higher clock speeds. I don’t know hardly anything about upping the voltage... Could someone enlighten me? All I know is some sites said don’t go more than 15-20%; and 25% is pushing it for daily use. I’ve only increased my voltage from 1.4 to 1.412, and don’t really want to go one step higher unless I learn a little more about it.

I’ve been using computers since forever and had a semester in PC maintenance & tech, so don’t be afraid to get into the details. Though this is my first AMD machine :) (All my other comps were Intel, and one was even a Motorola.) I wish I would’ve at-least checked into OCing sooner :\

A quick list of things limiting how much one can OC would be cool, or a guide too... Or anything would be great :) I searched google, but most of it wasn’t much help, or from 10 years ago.
 
If you getting a 955 to 4ghz. with only 1.412 voltage. Leave it there and be happy. lol

Ha yea I am pretty happy with it. I’m stress testing it now. It’s been going for about 30 minutes. The highest temp it hit so far is 64˚C. (with case closed) I’m gonna let it go for the whole night and see where it goes. I wish my laptop would run this cool...

But still, I’d like to know a few common things that limit people from getting higher OCs. Like is it just a heat issue? PSU quality? NB temperature? Any info would be cool :)

EDIT:
After about an hour, I quit the stress test, to re-run at the CPU’s factory voltage of 1.35. At 1.412v It hasn’t crashed and has stayed at 64˚C or less. It’s gone about 20 minutes at 1.35v at 4Ghz and the temp dropped to 59˚C, and the test is still burning-in. Why did my BIOS automatically set the voltage higher than it’s supposed to be? :S Meh w/e, it was only 0.05v higher
 
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