Intel I-5 4670k at 1.224 stock won't OC more then 4.2

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Morariu Emanuel

Reputable
Aug 31, 2014
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4,510
Last week I bought a MSI z97 gamimg 5 motherboard and an intel i-5 4670k along with a corsair h55 liquid cooler. I had in mind to overclock the cpu to 4.4 Mhz. But when I first entered the bios I saw that the voltage default at 1.224v (auto) So I set it to adaptive and managed to OC the CPU to 4.2 mhz without raising the voltage but when I put it to 4.4 even with a voltage of 1.295 isn't stable.
I even updated my motherboards bios to the latest version.
The temps are pretty ok at 4.2.
Can I do something to get it to 4.4? or I just got a bad chip..?
Thank you very much, looking forward for your answer.
 
Solution
S


Try turning off the C-states. Some cpu may require more than 1.330 volts to run 4.4 GHZ. You might be unlucky to get those kind of chips. Try going a bit higher on the voltage but not too much, your H55 isn't particularly a good cpu cooler for...
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Morariu Emanuel

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Aug 31, 2014
10
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4,510
I already tested the cpu with Prime 95 at 4.4 mhz with a voltage of 1.295 ( i increased it in increments just like you said) and it still gave me a blue screen ( the temps were under 70 ) and I was afraid to raise the voltage more then 1.295 because it gave me a warning.
Should I raise it above 1.295?
Do I have to disable anything in the bios that can affect stability?
Thank you for answering so fast! I apreciate it.
Looking forward for your rely. Cheers
 
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Morariu Emanuel

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Aug 31, 2014
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Aparently I can't go higher then 4.2 Mhz with a Voltage of 1.230.
Even at 1.330 at a speed of 4.4 Mhz it gave me a Blue screen,
At 4.2 the temps are well bellow 75c thats why I wanted to OC abit more but It seems that I can't.
And it sucks cause I bought the wather cooler expecially for overclocking and I can't go higher...
If there are other features that can affect stability pls let me know.
Do I need to turn down the intel turbo boost?
What about the C-states?
Thank you very much!
 
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Suztera

Polypheme
Mar 18, 2014
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Try turning off the C-states. Some cpu may require more than 1.330 volts to run 4.4 GHZ. You might be unlucky to get those kind of chips. Try going a bit higher on the voltage but not too much, your H55 isn't particularly a good cpu cooler for overclocking.
 
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Solution
M

Morariu Emanuel

Reputable
Aug 31, 2014
10
0
4,510
Thank you mate, will do as soon as I get my second fan for a push pull config.
One more quastion though, do you think it would be better to change the fan that came with the cooler with a corair High Air Flaw 120 series?
The stock one seems pretty ok, though its a bit loud.
 
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