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i5 2500K was a 5Ghz, now won't go past 45x Multi

post #1 of 14
Thread Starter 
Right guys basically, I've been running 4.2Ghz as my 24/7 stable all fine and perfect had 4.6Ghz before easy was all stable and good.

Thought I'd try for 5 Ghz so I bumped the multi to x50 it booted fine with auto voltage and tested with prime95 for hours.

Decided to back down as didnt want to run stupidly fast and decrease life span.

However now whatever I set my multiplier to in UEFI, when I get into windows CPU z, Core temp all report a multi or x45 and when i run prime it drops to 42x.



I don't get any errors in prime or anything and its all stable but I cannot OC over 45x now.



Also it only needs tiny voltage to be stable at 4.2Ghz now. Seriously 1.224v is stable at 4.2Ghz.

Which is crazy low. Temps have never exceeded 61c in any of my extensive prime95 runs.



Any ideas why the multi is stuck ?
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post #2 of 14
One thing never to do is use AUTO Vcore especially for a 5ghz overclock!! That is a very bad decision, and to run hours of prime like that:teaching:.

What do you have your Cpu current set to? If it's too low, it will throttle the cpu under load. Can you post some of your settings?
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Red X9
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post #3 of 14
I had a similar issue where I was running at 4.4, boosted to 4.6, stable for over a week while folding/stress testing and it won't book back to 4.6 now. I still haven't solved it, going to look into it more after the forum folding war.

I would look at your settings again and possibly clear the bios and start over.
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Shrinkage
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post #4 of 14
Most get stuck at 4.5 to 4.7 because of Internal Pll overvolt being disabled. Try enabling that and see what happens
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post #5 of 14
WHAT! YOU USED AUTO VOLTAGE!
When i accidentally put auto voltage for 4Ghz it set it to 1.6v!
Have you tried resetting cmos?
Edited by jach11 - 11/11/11 at 12:28pm
post #6 of 14
Thread Starter 
I monitored what t put for auto voltage with CPU z, and it was well within range and well below 1.5v.

Will try pll enabling see if it makes a difference thanks for the replies guys!
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post #7 of 14
hmm..i'm feeling thermal throttling..am i wrong? what are your temps?ok..i read..umm..do you have all the current limits set to 250 or better?
 
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post #8 of 14
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post

hmm..i'm feeling thermal throttling..am i wrong? what are your temps?ok..i read..umm..do you have all the current limits set to 250 or better?


250 or better in what ?


Also Pll has made no difference. Multiplier still stuck on 45x.
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post #9 of 14
Did you update your bios? Some of the new MSI new bios will auto drop multiplier when under extreme load, my ED55 was the case with the new bios. If that is the case just flash back the old bios and you should be all good. thumb.gif
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post #10 of 14
Thread Starter 
Nope, nothing like that I have updated my bios but it was prior to the 5Ghz run well before.
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