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Issues OCing my 2500K

ANN1H1LAT0R

ANN1H1LAT0R

ANN1H1LAT0R

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Joined
19 Oct 2011
Posts
426
First of all here is my current system:

Motherboard: Asus Sabertooth P67 B3 Rev
CPU: Core i5 2500K
CPU Cooler: Corsair Hydro H60
Memory: Corsair Vengeance 8GB (2x4GB) DDR3 PC3-12800C8 1600MHz
PSU: Coolermaster Silent Pro 1000W
Graphics: MSI GeForce GTX 580 OC Twin FrozR II 1536MB
Sound Card: Asus Xonar D2X 7.1
HDD: OCZ Agility 3 120Gig
Case: Coolermaster HAF 912

Now after so much reading, advice from here and several websites and forums I've tried OC my 2500K however to no avail.

I think it's a voltage issue but I'll explain. After changing all the settings in the Bios but using the overvolt + system for the voltage the system booted but CPU-Z registered a voltage of 1.34V on a 4.5Ghz clock.

So I decided to set the voltage mYself as Ive read anything over 1.3V is bad for the CPU. So I went for 1.27V. The system wouldnt boot into windows and blue screened at the windows logo.

So I changed to 1.28V. The system booted to windows but the when I loaded CPU-Z it blue screened so I went for 1.29V.

The system booted and everything seemed stable. I ran CPU-Z to ensure OC was at 4.5Ghz and CPU-Hardware Monitor to check temps and ran Prime 95 for stability. After 8 passes with CPU temps as follows

CPU 0: 64 Degrees
CPU 1: 66 Degrees
CPU 2: 65 Degrees
CPU 3: 67 Degrees
CPU Overall: 66 Degrees

The system bluescreened again

Changed the voltage to 1.295V same issue and so Ive now given up. Can anyone help me pleeeeeaaaaasssseeee

Ive heard that not all 2500K's can be overclocked. Am I just unlucky?
 
Reset the bios to default/clear cmos and start again without going near the auto overclock.

Also don't go straight for 4.5ghz.

All 2500k's can be overclocked, some chips go higher than others though, just because it's not stable after changing from 3.3 to 4.5 without some tweaking doesn't mean it can't be overclocked.
 
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ANN1H1LAT0R said:
First of all here is my current system:

So I decided to set the voltage mYself as Ive read anything over 1.3V is bad for the CPU. So I went for 1.27V. The system wouldnt boot into windows and blue screened at the windows logo.
Click to expand...

I'd say you definately need some more volts. Mine below runs at 4.6GHz/1.4v or 4.5GHz/1.375v. Some will run at high clocks/low volts but thats the luck of the silicon lottery

http://www.overclockers.co.uk/showproduct.php?prodid=CP-360-IN
- Do not exceed 1.425v core voltage, doing so could limit lifespan of the CPU
- Aim to keep temperatures below 70c underload if at all possible
 
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ANN1H1LAT0R said:
Ah so Im wrong with the max limit the 2500K can take then? Am I going to be killing the life of the CPU significantly though if I go to about 1.3ish Volts?
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You'll be fine and you might need to go higher as I did and I'm still under what OC/Intel recommed as max. As spixelspixel says just make sure its not getting too hot.
 
haha so aslong as I can keep temp to around 65-70 degrees max after 24hours Prime95 Ill be good

Just as a quicky does the blue screen of death harm a PC in any way?
 
no i've had the blue screen of death many times but nothing actually died, its just an error code caused by instability.

and this is just my opinion but... I don't think you need to run prime95 for 24 hours. The amount of stress put on the cpu during that could be the equivalent to weeks or even months of general pc usage. Run it for an hour or so and play some games to see if its stable. I don't like stress tests, over rated imo. I find it funny when people brag about how they ran prime 95 for 24 hours, 50 runs of IBT followed by a bit of OCCT to prove their overclock is stable.
 
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spixelspixel said:
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and this is just my opinion but... I don't think you need to run prime95 for 24 hours. The amount of stress put on the cpu during that could be the equivalent to weeks or even months of general pc usage. Run it for an hour or so and play some games to see if its stable. I don't like stress tests, over rated imo. I find it funny when people brag about how they ran prime 95 for 24 hours, 50 runs of IBT followed by a bit of OCCT to prove their overclock is stable.
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Thats called burying your head in the sand mate. Stress tests are there for a reason, your pc should be able to complete anything you throw at it as it would when at stock speed. Don't spread bad advice.
If you are happy with your pc potentially having a weak link in the chain and falling over, whether it be a critical moment at 99% into a video render that took 5hours and spoiling the file or simply browsing the latest in adult entertainment on the net, is up to you.
We stress the pc and torture it to make sure that given the worst case scenario, it'll still be ticking over, prime or ibt will not kill your cpu and how you came to the conclusion that its the equivalent of 'months' of stress is beyond me.
 
Justintime said:
Thats called burying your head in the sand mate. Stress tests are there for a reason, your pc should be able to complete anything you throw at it as it would when at stock speed. Don't spread bad advice.
If you are happy with your pc potentially having a weak link in the chain and falling over, whether it be a critical moment at 99% into a video render that took 5hours and spoiling the file or simply browsing the latest in adult entertainment on the net, is up to you.
We stress the pc and torture it to make sure that given the worst case scenario, it'll still be ticking over, prime or ibt will not kill your cpu and how you came to the conclusion that its the equivalent of 'months' of stress is beyond me.
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Everyone has a different opinion, its not bad advice, even pc's not overclocked can crash time to time. If it can stand being tortured for 1 hour its good enough for me.

I never said prime95 or ibt would kill your cpu, but running them excessively will obviously cut down its lifespan.

Some people don't render videos and or do other long daunting tasks that would be a headache to restart yet they still stress the cpu to its limits for hours on end. Not to mention its boring and takes up gaming time :) Whats worse than a video render failing at 99 percent? Prime95 failing after 23 hours :(

Its just pointless, my opinion.
 
spixelspixel said:
What is the point of stress testing for hours on end then? Best stress test is just using the pc normally once the overclock is obviously passed the 'completely unstable' stage ;)
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A stress test is a quick way to bring those instabilities to the surface instead of being surprised 2 weeks down the line.
Anyhow, you got your opinion, your call.
 
spixelspixel said:
24 hours is not quick. I tried once, couldn't do it, had to shut it off after an hour. never encountered any problems with the overclock.
Click to expand...

You can do it faster...but the longer you spend testing various conditions the more you can rely on your puter not crashing.
 
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