Weird Overclock

[D3LL]

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?

 

[D3LL]

Anyone??

 

[Everlong]

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.

 

[Johnathan Lyman]

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)

 

[D3LL]

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?

 

[D3LL]

Bump?!?!?!?

 

[Wishmaster]

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.

 

[D3LL]

It may be my power supply, It is kinda a cheap one.

Should I go with any of these?

http://www.play.com/PC/PCs/4-/10136934/CiT-700UB-Black-Edition-700W-PSU-Power-Supply-Unit/Product.html?_%24ja=tsid:11518|cat:10136934|prd:10136934

Evo Labs 700W Modular 80+ 8PIN 14cm RB

EZCOOL 700W INFINITY ATX POWER SUPPLY UNIT PSU 700W on eBay (end time 25-Jan-11 19:18:03 GMT)

Computers 4u -Components-Power Supplies (PSUs)-Power Supplies (PSU)

Corsair TX Series, 750 Watt, ATX, PS/2, Power Supply, UK Version (CMPSU-750TXUK): Amazon.co.uk: Computers & Accessories

 

[DaGooN]

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 ..

Edit:
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.

 

[Wishmaster]

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.

 

[D3LL]

I am looking at getting the 750w Modular from Corsair. Modular so I am able to do good cable management.

I am also looking at getting x2 6990.

 

[amigo max]

Some times the voltage is not right too,
Do you adjust the voltage? or is it on auto?

 

[D3LL]

I put it to around 1.45.

 

[Ooomwizard]

It sounds like it's not your processor, but your GPU(s.) If your GPU overheats it will crash your system just like a processor OC. Often, you can go back and look at your "Event Viewer" and see what caused your crash.

I bet it's your GPU, especially if you've got it overclocked at all. Try a Furmark or OCCT benching test (both free) and see if you get glitches or artifacting or crash!

GL

 

[thefabe]

You should also have both of these programs when overclocking Gpu-z and CPU-z
Download TechPowerUp GPU-Z v0.5.1 | techPowerUp

CPUID - System & hardware benchmark, monitoring, reporting

Gpu-z will monitor heat and clock speeds among other things.
CPU-Z will monitor your CPU voltages and overclocks
Fabe

 

[sygnus21]

If you're going to overclock you need to visit forums like Overclockers Forums - The Performance Computing Community

I get the feeling you're just guessing at stuff or doing what others say do - that's OK to a certain extent..... but you need to have an understanding of why you're doing stuff - example: tweaking voltages.

Overclocking without having an understanding is just begging for disaster.

As for your BSOD's.... it could be caused by anything.... not just a power supply..... especially since you're overclocking.... which is where you will see a lot of BSOD's if the voltages/settings are wrong.

My suggestions would be to visit a couple of overclocking forums, read and ask questions.

My two cents.

 

[skunksmash]

does the PC restart of its own accord when your not OCed..??

ive had unstable RAM reboot my machine before with no visible BSOD..???

 

[D3LL]

I have now solved the problem. The overclock was unstable due to a cheap power supply. I have now replaced it with a Corsair AX 750 and works fab!

Thanks for all the help.