CPU Voltage and Motherboard

[Almin94]

Hi!

I have a AMD Phenom 955 BE. I overclocked it to 4GHz with a voltage of 1.45V.

My question is how much voltage of 1.45V is harmful to my motherboard for 24/7 - ASUS M4A89GTD PRO/USB3 ?

Other HW:

Gigabyte HD6950OC Windforce
RAM: 8GB DDR3 1600MHz
Cooler Master V8

 

[Almin94]

Anyone?

 

[mrsnazzypants]

what are your temps and what do you use to cool your cpu

 

[beanoslim]

Voltages generally effect temps, if your temps are good then you are usually ok.

Check your CPU and chipset temps with http://download.cnet.com/HWMonitor/3000-2094_4-10793486.html.

Its usually pretty accurate.

 

[Almin94]

I use the Cooler Master V8. Max load temperature of the CPU is 51°C. .. How much voltage of 1.45V is harmful to this motherboard? Temperatures are ok?
Is the Chipset temperature same as "Mainboard" temp in HWMonitor: http://i49.tinypic.com/wapvki.jpg

What is the maximum temperature at which the CPU can run for longer time? (Sorry for my english)

 

[beanoslim]

Yup, looks good to me.

 

[wolfram23]

That CPU is rated for 1.5V max.

A very common misconception is that temperature is the only thing to really worry about - that with good enough cooling, you can crank the voltage up and be ok.

That is false.

1.45V probably won't be an issue, but it might. After a while - a year, two years, maybe three, that high voltage will cause wear on the internal circuits and eventually the OC will be unstable, requiring more voltage - which of course will only further the issue.

So the real question is how long do you want to run this CPU? I'd say for sure up to 4 years with maybe a little tweaking down the road. Also, it can always be downclocked to regain stability and longevity.

I know that with Intel CPUs (at least when I was reading the documentation on my i5 750), they state for it that up to 1.45V is ok in the sense that up to that amount, you should be able to return it all to stock settings and have it still work - they do not say that it is an ok voltage to run all the time for longevity.

 

[Almin94]

I'm not worried about the CPU voltage and that, because the CPU will not be with me long time, i will sell it, and buy new one for maybe 1year or more (depends on what games are).
But what about the motherboard and a voltage of 1.45V .. Is it harmful for that type of motherboard, because maybe when i buy new cpu, i will use this mbo

 

[wolfram23]

That's a pretty solid motherboard, I doubt it will be worn out from this.

 

[Almin94]

OK, thanks to everyone! Can anyone help me one more thing, to change my Voltage from Manual to Offset, because i cant enable coolnquite when Voltage contol is on Manual...

How to change it to offset, but to keep everything the same as the Manual (for example: Load Voltage ...) What I must set to "+" or "-" to get same as Manual Voltage control.
http://i48.tinypic.com/zojnmq.jpg

I hope you understand what I want to say..

 

[mrsnazzypants]

Dont change to offset if you want to keep it at 1.45, if its running fine as it is and your happy leave it, coolnquiet is rubbish anyway

 

[Almin94]

But, Cool'n'Quiet will reduce idle power consumption and temperature, you know...

 

[wolfram23]

When you set to offset, it should tell you the default voltage (at least, if you reset your OC to stock first). Then just increase the offset to match 1.45V like before.

I think it's 1.25V stock, so you'd want to set +0.20V offset.

 

[beanoslim]

If you have the offset function and it works properly then its a no brainer.

Just check voltages under load and when idle then do as above.

Don't just assume that the settings you input are correct though, check them.

 

[Almin94]

I increase the offset to match 1.45V like before, i enable CnQ, but CoolnQuiet won't work, idle voltage isnt drop.. Should I set again to Manual? What is better?

 

[beanoslim]

On my board the cpu votage needs to be set to auto for cool n quiet or speedstep to work.

I can't say for sure how your board manages offset and other settings.

 

[Almin94]

On my board the cpu votage needs to be set to auto for cool n quiet or speedstep to work.

I can't say for sure how your board manages offset and other settings.

I can enable cnq when i set voltage to offset, but not work...

 

[Almin94]

Which program is best for testing CPU/NB stability?

 

[beanoslim]

Prime 95

OCCT

Intel Burn Test

Folding@Home

 

[Almin94]

Ok, thanks. All stable, CPU/NB 2600MHz with 1.25V. IntelBurnTest 75 runs passed, LinX 20runs, all memory in use, passed! ^^

 

[beanoslim]

You did 75 runs of Intel Burn?? What setting?

I normally do 1 hr OCCT, 10 passes of Burn on MAX, 12 hrs Prime 95 then 7 days Folding 24/7 just to be sure.

 

[Almin94]

Ibt settings on Maximum, 75 runs, no errors.

 

[beanoslim]

Cool