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Windows 7: Weird Overclock

14 Jan 2011   #1

Weird Overclock

Hello there,

When overclocking my CPU to any speed (Check signature for specs)
It seems my PC always restarts 5-10 minutes into a game. Always after I overclock I run prime95 for about 5 hours and I get no errors.

I have even tried the exact same overclock as LinusTechTips.
Can someone help me?

My System SpecsSystem Spec
14 Jan 2011   #2


My System SpecsSystem Spec
14 Jan 2011   #3


You'll just have to play with the voltage a bit. You can't just copy what someone else has done as no CPU is exactly the same as another CPU.
My System SpecsSystem Spec

14 Jan 2011   #4
Johnathan Lyman

Windows 7 Ultimate 64-bit

The difference between a game and Prime95 is the level of CPU usage can fluctuate during the game.

Also check your Event Viewer and see if you are getting and BSODs (which may explain the automatic restart)
My System SpecsSystem Spec
14 Jan 2011   #5


I am not getting any BSOD. The screen just goes into power saver then the PC restarts.

What do you think would be a good voltage for my specs?
My System SpecsSystem Spec
15 Jan 2011   #6


My System SpecsSystem Spec
15 Jan 2011   #7

Windows 7 Home Premium 64bit

If you are getting no errors of any kind, just a restart of the entire PC, this typically points to a failing Power Supply.
It could also be that your Power Supply is fine, but can not handle the load its being asked to deliver.

Im wondering if the OC is even stable.

5hrs of Prime is not enough to sure of stability.
Ive had them fail at the 8hr and 9hr marks before.

If you can pass a blend test for 10-12hrs, you will be fine.
Most instability will be found by then.

Some will have a different opinion on whats acceptable, but I think we can all agree, 5hrs is not long enough as a final test.

MemTest would also be a good idea.
My System SpecsSystem Spec
15 Jan 2011   #8


My System SpecsSystem Spec
15 Jan 2011   #9

Windows 7 64bit Ultimate SP1, VMware Windows 7 64bit Ultimate SP1

you should never go cheap on a PSU for a computer build since it is one of the backbone's if not thee backbone of the system. if you cheap out on a PSU you run the risk of damage to the rest of the parts in the computer. this i think you know going by your My System Specs vs your Sig spec

Corsair PSU are really good/silent also 80+Gold. ectect all that good stuff. you can maybe find a nice 650 modular cheap. as by your spec you ain't going to need more then that, unless you intend to upgrade to dual or 3way graphic cards.

could also get the 750 version now for 100 :)

Corsair HX750W power supply 750 Watt

you can try this site out to get a good idea of what power rating you will need for your setup. i mean there is really no need for overkill..

eXtreme Power Supply Calculator

id just like to say i ran my system with no problems on a Corsair 520watt Modular for over a year without a problem. i7 920 @ 4.2 then 4.0 due to heat ;/

best part about Corsair is the 7-Year Warranty :)

Hope it helps in anyway ..

have you made sure the Ram has no errors? you run memtest86+ to rule out the memory giving you this problem. as most of these shut downs are normal CPU/PSU/Ram issues.
My System SpecsSystem Spec
15 Jan 2011   #10

Windows 7 Home Premium 64bit

I would agree do not get a cheap PSU,

Personally, Corsair & then Antec would be my top 2 choices.

I would stress test w/Prime overnight, at least 10hrs.

If it can pass for that long, then the CPU/RAM would appear to be OK.

If it isn't restarting on you, but passing the tests, try another test where you stress the GPU as well.
Such as 3D mark or Vantage. If it bomb there, it would be quite likely the PSU can not keep up with everything under load.

That would be my suggestion at this point before spending money on a PSU right away.(Although it would be my main suspect)

Sadly, theres not an easy way to test the PSU. Perhaps others have a better way of checking.
My System SpecsSystem Spec

 Weird Overclock

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