PC Restarts Automatically After Overclocking

[amang]

Hi guys,

 

I am new to this overclocking process, so please bear with my questions. I recently played around with my PC by overclocking it with the following specs:

 

CPU Overclock: 4.5Ghz

BCLCK: 180Mhz

SPD Multiplier: 12

Memory Frequency: 2160Mhz

CPU Vcore: 1.5373V

QPI/Vtt: 1.375V

IOH Core: 1.300V

DRAM Voltage: 1.86V

 

I stress-tested this system with Intel Burn Test for half an hour and everything went well. However, when I left the computer for, say, downloading stuff with uTorrent or running a screensaver, the PC will automatically restarts itself.

 

Is there anyway for me to diagnose what causes this problem?

 

Thanks for your help in advance.

[sack_patrol]

Hi guys,

 

I am new to this overclocking process, so please bear with my questions. I recently played around with my PC by overclocking it with the following specs:

 

CPU Overclock: 4.5Ghz

BCLCK: 180Mhz

SPD Multiplier: 12

Memory Frequency: 2160Mhz

CPU Vcore: 1.5373V

QPI/Vtt: 1.375V

IOH Core: 1.300V

DRAM Voltage: 1.86V

 

I stress-tested this system with Intel Burn Test for half an hour and everything went well. However, when I left the computer for, say, downloading stuff with uTorrent or running a screensaver, the PC will automatically restarts itself.

 

Is there anyway for me to diagnose what causes this problem?

 

Thanks for your help in advance.

For a final overclock, 30 minutes of testing isn't enough. You need to leave it for 12-24 hours. If it crashes before that time, then your overclock is simply not stable.

[joel.monteiro]

What are the temps?

[Boinker]

Also, Have you disabled C3 state, speed step and all the power managment features. I'm trying to remember all of them but they will cause system instability during idle and cause a system restart.

 

It pains me to say it but I somewhat agree with Ballist1x. I'm not much of a fan of intel burn test. I prefer occt and passing at least 4 hours of linpak with 50% free memory alocated.

 

And also are you seriously running 1.5 volts..... Just for my curiosity what kind of cooling are you using.

[amang]

Thanks for the tips guys.

 

I just found out that it was my screensaver that crashes my Windows. I manage to tone down the overclock to 4.50GHz with 1.40volts, memory frequency 2000Mhz, BCLK 166Mhz. Currently running F@H with -smp12 at temperature around 80'C on average, and it's been running for 8 hours without any hiccup. Do you think the temp is running a bit too high when running F@H?

 

Quick question: is there any significant merit in overclocking your RAM?

Edited February 7, 2011 by amang

[iskout]

Thanks for the tips guys.

 

I just found out that it was my screensaver that crashes my Windows. I manage to tone down the overclock to 4.50GHz with 1.40volts, memory frequency 2000Mhz, BCLK 166Mhz. Currently running F@H with -smp12 at temperature around 80'C on average, and it's been running for 8 hours without any hiccup. Do you think the temp is running a bit too high when running F@H?

 

Quick question: is there any significant merit in overclocking your RAM?

What's your CPU?

 

You're definitely overdoing it for a first attempt.

 

We need some information...

 

1) What CPU are you using?

 

2) What Cooler are you using?

 

3) Have you tried dropping the clock to like a 4.0 at a much lower voltage? This will help with stability and heat.

[amang]

1) It's an i7 980x

2) It's a water cooling kit that comes together with my case, Xaser VI. You can have a look here http://bit.ly/eV5MOY

3) I tried that before, but would love to see how far this machine can push.

 

So what's the ideal temp for a processor? I am looking for crunching numbers (like F@H) on a regular basis.

 

Plus, have you got any recommendation of what temp monitoring software I should use? I have got CPUID Hardware Monitor and RealTemp, but both give me a slightly different view of my CPU temps.

Edited February 7, 2011 by amang

[RJR]

Well a LOT of people debate temps and what is safe, here is Intel's take on it:

 

Specs, and on the right hand side you can download the Data Sheet to give you loads of info.

 

As per Intel (who of-course is playing it safe so the chip lasts past warranty) states 67.9c Tcase (72-73c core) as the max recommended and 1.375v max vcore.

 

All of these specs are of-course subjective to the user and what risk you feel comfortable with.

 

As for the temps CoreTemp and Realtemp seem to be pretty good.

[iskout]

You might just not be able to keep your chip stable at that clock. You have wicked high voltage for that chip, so that's all I can think of.

[amang]

3) Have you tried dropping the clock to like a 4.0 at a much lower voltage? This will help with stability and heat.

 

Thanks for the tips. I managed to tone down my overclock to 4Ghz at 1.3v. Average temp running F@H is between 63-69'C.

Will this perhaps help?

 

My further questions are:

1) Will higher CPU overclock result in a better CPU folding?

2) Is there any significant merit in overclocking your RAM?