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Q9550 at 4.0GHz - Page 2

post #11 of 45
Thread Starter 
Ok Guys,

So can I say that as long as
1. CPU maintain 65-degC on load is I should be fine, right?
2. 1.45V is the limit is it? What about the BIOS and CPU-z differnece in about 0.02V?

And by the way, do you think I should use Core Temp to monitor my Temp in CPU? I am just concerned about the accuracy but if you guys find it as accurate then I will keep on using it.
    
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post #12 of 45
Thread Starter 
Quote:
Originally Posted by Mattb2e View Post
I updated my post to include further information, please read that as well.
What is CPU Volts at 3.8GHz Mate? Is this your day-day speed? How is your CPU temps?
Thanks
    
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post #13 of 45
Quote:
Originally Posted by rheicel View Post
Ok Guys,

So can I say that as long as
1. CPU maintain 65-degC on load is I should be fine, right?
2. 1.45V is the limit is it? What about the BIOS and CPU-z differnece in about 0.02V?

And by the way, do you think I should use Core Temp to monitor my Temp in CPU? I am just concerned about the accuracy but if you guys find it as accurate then I will keep on using it.
Ive always used Realtemp, I cant speak for the current date, but in the past it has been far more accurate than Coretemp was. But then again, so long as the TJmax is set properly in either program, it shouldn't matter which one you choose to use.

You can go higher than 65c and 1.45v but the chances of degradation will surely increase. If you do purchase a WC system, the effects of higher voltage will be reduced do to lower temps. Yet still, I would recommend keeping below 1.45v and 65c for 24/7 use. Anything beyond that I would use for a strictly "Suicide Run" basis.
post #14 of 45
Thread Starter 
Quote:
Originally Posted by PowerTrip View Post
I concur, you can do 1.45v safely.

Looking at your sig, looks like P45 overclocks better than the 790i. Sigh! What is your CPU temp?
    
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post #15 of 45
Thread Starter 
Quote:
Originally Posted by Mattb2e View Post
Ive always used Realtemp, I cant speak for the current date, but in the past it has been far more accurate than Coretemp was. But then again, so long as the TJmax is set properly in either program, it shouldn't matter which one you choose to use.

You can go higher than 65c and 1.45v but the chances of degradation will surely increase. If you do purchase a WC system, the effects of higher voltage will be reduced do to lower temps. Yet still, I would recommend keeping below 1.45v and 65c for 24/7 use. Anything beyond that I would use for a strictly "Suicide Run" basis.
OK, thanks for the tip, this is some good info.
    
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post #16 of 45
Quote:
Originally Posted by rheicel View Post
What is CPU Volts at 3.8GHz Mate? Is this your day-day speed? How is your CPU temps?
Thanks
My temps are around 60c for that speed, and around 1.37v . The oddity is that I need a ridiculous amount of voltage to go beyond that speed. At a solid 4.0ghz, my chip requires in excess of 1.42v.
post #17 of 45
Thread Starter 
Quote:
Originally Posted by Mattb2e View Post
My temps are around 60c for that speed, and around 1.37v . The oddity is that I need a ridiculous amount of voltage to go beyond that speed. At a solid 4.0ghz, my chip requires in excess of 1.42v.
Ok thanks, I think it still differs from chip-chip and CPU-board combinations.
    
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post #18 of 45
Quote:
Originally Posted by rheicel View Post
Ok Guys,

So can I say that as long as
1. CPU maintain 65-degC on load is I should be fine, right?
Yes, even if it exceeds 70-75, it's still fine. I mean it won't fry or start on fire if such a temperature is reached.


Quote:
Originally Posted by rheicel View Post
2. 1.45V is the limit is it? What about the BIOS and CPU-z differnece in about 0.02V?
There are two things happening:
  • vDrop. This results in the idle voltage we see in software like CPU-Z.
  • vDroop. This results in the full-load voltage we see in software like CPU-Z.

Both are normal and by-design. On top of that, the voltage we see in software such as CPU-Z is the actual voltage that is running through the CPU.


Quote:
Originally Posted by rheicel View Post
And by the way, do you think I should use Core Temp to monitor my Temp in CPU? I am just concerned about the accuracy but if you guys find it as accurate then I will keep on using it.
Real Temp is a little bit better, however as long as the software is using a Tj. Max of 100°C, then the temps will be accurate enough for practical use (they're never accurate in the first place).
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post #19 of 45
For "safe" 24/7 usage:

Keep your core temperatures under 75C at all time..

Keep your Vcore under 1.40V (LOAD) at all time..

CHEERS..
     
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post #20 of 45
Quote:
Originally Posted by rheicel View Post
Ok thanks, I think it still differs from chip-chip and CPU-board combinations.
Most certainly. Even chips from the same batch are not equivalent in terms of overclocking results. From what I have read, the SLI chipset boards are a bit of a pain to achieve higher overclocks on the quad core lineup. The P45 chipset really is the true shiner in that aspect. I have had issues myself with overclocking my Q9550 on my X48 chipset. Which happens to be nothing more than an overly modified P35 chipset, for all intents and purposes.
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