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Z71V CPU heat crash

post #1 of 24
5/22/05 at 1:28am
Thread Starter 
I have the Z71V with the 1.8MHz 745 processor (400mhz) CPU specks .

I have a stability problem with my computer. Every time I try to use any CPU hungry app or game the computer crazes, its different and at a random time in the program\game every time...

My idea of this problem is that I have 533MHz memory and the computer seams to run with the bus speed of 533 but my processor is only 400 bus. Can this be the problem?
Would the memory not fall back to 400MHz?
Intel processor ID utill claims that I am overclocking the computer to bus 533MHz (CPU-Z agrees), but I am not and I will never do that.
Is this perhaps a hardware setting that the reseller has made a mistake with?
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post #2 of 24
5/22/05 at 2:04am
You have the 745 processor? THat is a problem. There is a bug with the original bios someone here saw as well where when used with the 745 processor it will clock up to the 2.13 processor speed.

Download the latest BIOS and flash it.
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post #3 of 24
5/22/05 at 9:28am
Thread Starter 
Quote:
Originally Posted by smilepak
You have the 745 processor? THat is a problem. There is a bug with the original bios someone here saw as well where when used with the 745 processor it will clock up to the 2.13 processor speed.

Download the latest BIOS and flash it.
I flashed my computer to v208 (the newest BIOS currently available).
Sorry to say it did not fix my problem.

Intel CPU ID utill still states that my bus is over clocked from 400MHz to 533MHz.
Attached is a register dump from the ever so brilliant CPU-Z. Can anyone see what the problem is?

In this report I am running the computer in battery optimized, its connected to AC but this is the only way to keep the heat down and the computer stable (the wired thing is that the computer is very stable as long as I don't turn on max power)
I use Centrino Hardware Control this program can over clock but that feature of the program is disabled for sure. I use this instead of Power4 gear because of the combination of power control-heat monitor. I had the same problem on P4G.
I would like to find a fan monitor if anyone knows of one...
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post #4 of 24
5/22/05 at 7:49pm
CPU-Z doesn't have full support for sonoma.

What does the BIOS read your system as?
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post #5 of 24
5/22/05 at 7:50pm
Hmm from the CPU-Z dump it looks fine...did you download mobile meter to monitor the system temp?
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post #6 of 24
5/22/05 at 8:20pm
Thread Starter 
Attaced is a report from Intel Processor Identification Utility, I downloaded the program and installed about 4 day's ago so it is the newest version. I generated the report about 10 minutes ago.

I expect the program from Intel to be 100% correct, at least it concurs with CPU-Z so the odes of them both being wrong are at the very least slight...

Note at the top of the report:
"Processor Name: Intel(R) Pentium(R) M processor 745 1.80GHz"
And at the bottom:
"Expected System Bus Frequency: 400 MHz
Reported System Bus Frequency: 531 MHz"

I just don't get this problem
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post #7 of 24
5/23/05 at 12:42am
Hmm that I haven't tried that Intel software on mine yet, so don't know if it is that problem.

What does the BIOS report. Because look at it this way. The process 745 if running @ 400 Mhz will give you 1.8ghz. However, if it is running @ 533Mhz bus then the speed will otuput to 2.31Ghz due to the bus speed x the multipler. So as long as the BIOS and other utilize seeing as 1.8ghz then it is correct you are not being over clocked.

Download mobile meter and monitor the temp. If you see it around 60c then you are fine. But if it reach over 70c somethign to look into.
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post #8 of 24
5/23/05 at 5:17am
i have the same kinda system.. mine usually runs below 60 degrees at 2.39ghz..
must be a z71v bug.. but no stability / heat issues here.. mine runs 56-60 degrees or so when playing guild wars..
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post #9 of 24
5/23/05 at 11:41am
Your issue is the over clock.

I don't think he is, because it reports as 1.8 still. Your reports as 2.39.
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post #10 of 24
5/23/05 at 12:10pm
You'll notice that when you open the bottom of the laptop, that next to the CPU you'll see two tiny little jumpers.

Refer to this page for possible changes to the jumper positions that may reduce your CPU speed to 400 Mhz:

CPU installation tech .pdf
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post #11 of 24
5/23/05 at 4:29pm
Thread Starter 
This must be the problem, how come they are making all (or most) motherboards jumperless, but on a high tech notebook they still have jumpers???

Thank you all for your help.
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post #12 of 24
5/23/05 at 8:20pm
Hi,

I wanted to ask you a simple question.

Did you know what type of termal pad is installed on you cpu?

Because, you cpu is overheating, but I've seen that 1CenT had the same cpu, the same computer, but no overheating, and no thermal pad, or a bad one (like the Intel One) could cause this overheating problem)

You could also try to undervolt you cpu.
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post #13 of 24
5/23/05 at 8:23pm
Well, we don't know if his CPU is overheating or not yet. He hasn't post the temp on it.

These pentium-m goes fine up to 80c...
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post #14 of 24
5/23/05 at 8:35pm
Quote:
Originally Posted by cue
I have a stability problem with my computer. Every time I try to use any CPU hungry app or game the computer crazes, its different and at a random time in the program\game every time...
Just for this.

I think that if it was only the overclock, the cpu wouldn't freeze so easily at random times.

So maybe he could install the Centrino Hardware Control to know the temp.

What I want to say is if there is no thermal pad (or too much), I understand that he couldn't use his computer.

Or he will have the first Dothan cpu i've seen that could not be overclocked
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post #15 of 24
5/25/05 at 6:59pm
Thread Starter 
My computer is not overheating, it runs at a steady 69-70c at full load.
But I dont know about the thermal padding, I cant open the computer without loosing the three year warranty to check what they used.
But I think they just used what came with the processor.
Do you have any ideas what I should ask them to use as a cooling extra?

I use Centrino Hardware Control.
I have neer undervolted anything before....
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post #16 of 24
5/26/05 at 4:31am
Quote:
Originally Posted by cue
[...]But I dont know about the thermal padding, I cant open the computer without loosing the three year warranty to check what they used.[...]
That's not totaly true, normaly, you can open it if you want to upgrade ram or hard drive.

Or...... well, in France we can do that, I don't know for international.

Look at your warranty to know.

For the CHC, try to overvolt your processor (a little, no more than 0.1v), maybe he is a little short of power.

EDIT : I've looked at some sites, and the Pentium M 770 (2.13Ghz) have a max voltage of 1.372V
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post #17 of 24
5/26/05 at 10:40am
Did 1Cent have AS5 applied? Maybe the CPU is overheating or in some way getting overwork and getting shut down... the temperatures may be perfectly accurate for the on-die temps.
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post #18 of 24
5/26/05 at 3:30pm
mine is at like below 66 degrees at full load.. i do not haf AS5 applied
i run mine at 1.292V (2.39ghz)
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post #19 of 24
5/26/05 at 7:14pm
Thread Starter 
I don't believe that I did´t see this before, but when I change to max performance the processor goes to 1.340v and 2399MHz. This overclocking is unbelievable, how come I've not fried the processor?

I tried to undervolt the processor to 2.292v and 1.308v in Centrino Hardware, but I get a blue screen and a reset as soon as I touch the set button.

So undervolting on a 745 processor with the bus set to 533MHz is not “advisable”...?
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post #20 of 24
5/27/05 at 5:06am
Quote:
Originally Posted by cue
I don't believe that I did´t see this before, but when I change to max performance the processor goes to 1.340v and 2399MHz. This overclocking is unbelievable, how come I've not fried the processor?

I tried to undervolt the processor to 2.292v and 1.308v in Centrino Hardware, but I get a blue screen and a reset as soon as I touch the set button.

So undervolting on a 745 processor with the bus set to 533MHz is not “advisable”...?
Errrrrrrrr, please say me that's not 2.292v but 1.292v.

For the overclocking, it's almost impossible to fry a processor just with an overclocking, because most of the processor will not even boot at a too high frequency. So 99% of the fried overclocked processor are due to too much voltage or heat.

And we know that the pentium m is actually an unbelievable (not sure about grammar) processor for overclocking.

Some people have overclocked a Pentium m 2.13Ghz (16*133) to 2.560Ghz (16*160) without changing the voltage on a desktop pentium m motherboard (so, not designed for a such high fsb).

For the undervolting I think you could say more to us :

Could you post some screenshots of CHC before you click on the set button please?

P.S Please forgive the fact that I wrote english like a spanish cow, I'm a little sleepy today.

EDIT : I've found this link on a forum it's totally incredible : http://www.xtremesystems.org/forums/...4&page=1&pp=25
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