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Q9450 on P5K-Dlx

Posted: Sat May 03, 2008 12:29 pm
by sbinh
Ran to Microcenter near by awhile back when they first carried Q9450 .......

popped it into P5K-Dlx board, reset CMOS .... booted it right into windows. .....Pushed it up to 3.4GHz

Anyway, up to 3.4GHz now .. kinda hot .. Idle: 43*C ... Might need to reseat heatsink

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Pushed it a little more to 3.6GHz (vcore 1.25v)

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Amazingly, it ran fine and passed OCCT test ... but the loaded temp 55*C (max) ... 2*C lower than it used to be at 3.4GHz.


Pushing it a little more after let it runs for awhile @3.6GHz ...

Now, able to push it to 3680MHz with vcore = 1.275v (in BIOS) ~ 1.25v in windows .... Max loaded temp 55*C.....
(Ealier, was not able to push FSB over 454MHz ) .. Now, it's stable at FSB=460MHz .. OCCT failed when FSB set to 463 (or above) within 10 minutes (with vcore set to 1.30v in BIOS)

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It appears to me that this CPU need to be "burned" at new speed for awhile before it would be able to run stable at next 5 MHz FSB increasement.

After increasing vMCH from 1.55v to 1.7v :o ), I was able to raise FSB to 465MHz.......

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Will try to push it up more ..

Re: Q9450 on P5K-Dlx

Posted: Sat May 03, 2008 1:00 pm
by Methious
Why is Tj Max on core temp in the first two screenies at 105C and in the last 3 shots it's 95C on the same CPU?

Re: Q9450 on P5K-Dlx

Posted: Sat May 03, 2008 1:49 pm
by sbinh
Methious wrote:Why is Tj Max on core temp in the first two screenies at 105C and in the last 3 shots it's 95C on the same CPU?

According to uncleweb - who developed new tool to measure core's temp : RealTemp, the TJMax for 45nm chip is 95*C not 105*C as CoreTemp report.

On first two pictures, I was using old version of CoreTemp - that reported tjmax = 105*C
On the other hands, on last 2 pics, I used both RealTemp and newest version on CoreTemp (which allows user to change tjmax to 95*C)

Re: Q9450 on P5K-Dlx

Posted: Sat May 03, 2008 7:28 pm
by ibleet
You don't burn-in, stress test your system at stock before overclocking?

Re: Q9450 on P5K-Dlx

Posted: Sat May 03, 2008 8:16 pm
by sbinh
ibleet wrote:You don't burn-in, stress test your system at stock before overclocking?

Seriously, I have never done so ... :mrgreen: