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Very high i5 2500K temps

Last response: in Overclocking
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October 16, 2013 6:17:38 AM

My Setup:

Chip: Intel Core i5 2500K

Mainboard: - MSI Military Class II P67A G-45

CPU Cooler: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

History:

I built a system a couple years ago with the above components. I did a fair amount of research, learning how easy the 2500K was to overclock. It was. In fact, I just changed the "CPU Multiplier" in my BIOS settings to "45", which auto-adjusts the voltage, etc. 4.5 Ghz?!? Awesome.
At that time, I paid almost no attention to CPU temp at all, and just subscribed to the following philosphy:
Does it crash? No? Ok, great! Carry on!
The thing has been running day and night (literally) for a couple years now. Fast-forward to yesterday, and I drop in new RAM, a SSD, and a new graphics card (HD 9750). I do a clean Windows install, re-do all the settings in my BIOS (put it back to "45"), etc. This time, I take a closer look, and the CPU voltage is 1.45, which as I understand it the max allowed. I check the temp of my CPU with various tools, and even under minimal load, we are in the mid 90's C!!!!!!!!

Now, I understand 4.5 Ghz is a little aggressive, but I have read of people being under heavy load and only reaching the 70's with those clock speeds on this chip. My cooler is nothing outstanding, but it's a damn sight better than the stock heatsink/fan for sure. I dropped the multiplier, and things are better, but even at 4 Ghz, I am in the high 50's under minimal load

Does anyone have any tips on getting the temps lower, perhaps through some more manual adjustment of some of the settings? Any advice is appreciated!

More about : high 2500k temps

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October 16, 2013 6:27:35 AM

did you use to much thermal paste? is the airflow to low?
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October 16, 2013 6:34:09 AM

The error you made was allowing the motherboard to auto-adjust voltage. Lower the voltage to around 1.3v, and stress test using prime95. You will see errors in the first half an hour if the OC is unstable. 1.3 will likely be too low, so if you have errors, or windows doesn't boot at all, then raise the voltage in the lowest increments possible until Prime95 stops showing errors. Then, check the temps again. Anything above 80C is danger-zone. Prime95:

http://www.mersenne.org/freesoft/
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October 16, 2013 6:39:51 AM

Patrick Guenter said:
did you use to much thermal paste? is the airflow to low?


expl0itfinder said:
The error you made was allowing the motherboard to auto-adjust voltage. Lower the voltage to around 1.3v, and stress test using prime95. You will see errors in the first half an hour if the OC is unstable. 1.3 will likely be too low, so if you have errors, or windows doesn't boot at all, then raise the voltage in the lowest increments possible until Prime95 stops showing errors. Then, check the temps again. Anything above 80C is danger-zone. Prime95:

http://www.mersenne.org/freesoft/


I got Prime95 last night, but it was right before bed, and I didn't have the patience to wait around for it. So I should try lowering the voltage, but leaving the multiplier?

It should be noted that I have never had an issue over the last couple years with automatic voltages at 4.5 Ghz. No BSOD, or anything. I was just kind of shocked to see the temps that high, granted, my case is laying on it's side right now, with the side off, but I don't think that should be too much of a factor. Thanks for the reply.
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October 16, 2013 6:41:47 AM

It's definitely a voltage issue. 1.45v is VERY HIGH. Keep the multiplier, lower the voltage. Patience is a key part of overclocking, and this will likely be a tedious process.
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October 16, 2013 6:46:12 AM

expl0itfinder said:
It's definitely a voltage issue. 1.45v is VERY HIGH. Keep the multiplier, lower the voltage. Patience is a key part of overclocking, and this will likely be a tedious process.


Thanks for the input! Can you tell me a little about what I should be looking for in Prime95? I will look around myself, of course, but I've never used it, so I'm not sure yet how to gather meaningful information from it.
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Best solution

a b K Overclocking
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October 16, 2013 6:52:28 AM

In normal operation, it will look something like this:

http://myego.cz/img/hw/prime95-4threads.png

If an error shows up (even in one of the windows) than you need to reboot and raise the voltage. An error will look something like this:

http://cdn.overclock.net/2/20/525x525px-LL-209d177a_vba...

It will also say "WORKER STOPPED", "WORKER HALTED" or something along those lines. Sometimes you will need to scroll down in the windows to see everything. Any errors that will affect system stability will show up within a half an hour. If you get no errors, you have a stable OC.
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October 16, 2013 7:14:02 AM

expl0itfinder said:
In normal operation, it will look something like this:

http://myego.cz/img/hw/prime95-4threads.png

If an error shows up (even in one of the windows) than you need to reboot and raise the voltage. An error will look something like this:

http://cdn.overclock.net/2/20/525x525px-LL-209d177a_vba...

It will also say "WORKER STOPPED", "WORKER HALTED" or something along those lines. Sometimes you will need to scroll down in the windows to see everything. Any errors that will affect system stability will show up within a half an hour. If you get no errors, you have a stable OC.


Awesome. Thanks very much for the help! I will play around lowering the voltage when I get home and run some stress tests. Good stuff.
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