Just built my Conroe System - crazy temps!

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You need an alternate heat sensor.

I can't believe that C2D would run that hot.

Make sure the heatsink is correctly seated. Touch the heat sink(carefully, a light tap should do to start), if it burns then your CPU is way too hot. I'd bet that the heatsink is mildly warm and that your sensors are at fault.

65nm should mean lower temps!
 
The new Conroe chips do run hot. They should be running 50-60C idle and up to 80C Load. Stop pussy footing around and buy a Thermaltake Big Water System they sell for $159 at Fry's. And fit every socket CPU out there. Water is the way, especially if your into overclocking. Temps rise slow and drop fast. Beats rise fast and drop slow! You can also check your bios settings for your fan. Disable the automatic cpu fan speed control and the HSF will run at max speed all the time. Good luck. :wink:
Click to expand...

Just to give you some sort of reference...
I just built my system about 2.5 wks ago. It has been running 24hrs since to make sure that if something's going to burn out I hope it does it within the 1st 30 days. I've already burnt a few DVD's & things & rendered a 6hr long family home video. No problems with heat so far.
My rig's CPU so far hasn't gone above 45c degrees since I 1st powered it up, my mobo reports that it hasn't gone over 45c degrees. It starts off at 42c degrees, then goes up upto 45c degrees. I don't OC anything new. I have the Thermaltake Silent 775 CPU fan/heatsink with Arctic Silver, the $10 one. I have two additional 120mm fans. One at the bottom front of the case sucking in air & one in the middle rear part of the case sucking out air, not to mention the stock 500watt PSU's fan which came with my ULTRA ATX case. I sandwiched the loose cabels that I could between the drive cages & the ATX case's solid non-removable panel which the mobo is crewed into so that there was as little air flow obstruction coming from or going to the fans.
See my rigs specs below. Hope this helps some. Good luck.
 
Touching the heatsink won't tell you anything about the CPU's temperature if it's not seated properly... since the CPU's heat won't be conducted into the heatsink.
 
Version 0509 2006/09/08 update



Description P5B Release BIOS version 0509

File Size 575.65 (KBytes)

Latest bios from Asus, it appears to resolve temp reading issues. Try it and see.
Click to expand...

I have an ASUS P5B mobo. I only see BIOS update version 309 on their site. Is that correct or a typo on your part? If it's not a typo, can you send me the link cuz I can't find it on ASUS web site. Thanks.
 
I was about to send you this link:
Similar problem

They seemed to having a similar Cd/IDE identification problem to you.

If it really were 80-85 it would be dead by now. Try using a different program, speedfan 4.29 etc.

Have you updated the Bios? I think that this may be a critical step.
Click to expand...


I've just downloaded speedfan, but it doesn't tell me my CPU temps, only mobo and fan speeds.

Anyway, I'm about to update my BIOS, so maybe that will do something.
 
... and how would you know that the heatsink is seated properly?

Getting crazy temps?
1. your CPU could be burning
2. the thermal diode could be lying
3. the heatsink could be seated incorrectly

Test for #1:
Touch heatsink. If hot, you need better cooling. If not, suspect #2 or #3.

Test for #2 and #3:
Turn off heatsink fan. Open ThrottleWatch or RMclock, and wait for CPU to throttle. Record temperature for which the CPU throttles. I'll assume the CPU throttles at 70C in real life (someone correct me on this).
A. If you observe the CPU throttling at, say, 100C according to the temperature sensor, then you know the diode is lying by ~30C. Nothing to worry about here, just remember that the diode is way off.
B. If, on the other hand, you observe the CPU throttling at 70C, the thermal diode is accurate. You know that the heatsink is not seated properly.
 
No trying to be facetious. But if you can't seat the heat sink correctly on a custom build then you should not be custom building with an expensive C2D chip. If it's his first build then I think the choice of system may have been a little expensive.

In my experience, if you run a chip without the heatsink correctly attached it would never get through a windows install because it would have fried within the first minute.

My guess is a dodgy sensor!
 
The HSF is seated properly, I have redone the thermal grease 3 times, cleaning the heatsink and CPU accordingly, and none of which changed the hopefully inaccurate temperatures.

Now I'm trying evilr00t's idea, then I will be updating the bios.
 
OK,

I had the same problem on my p5b deluxe wifi with an e6600.

Idle 49c and load above 60c. bios temp, no OS loaded.

Talked to intel and asus, asus had me download the new 507 bios, and install windows.

New temps from the asus probe II program off the driver cd-

38c idle, and 47c load.

Change the bios, and load windows (actually load windows first, very easy to update bios then from the asus update program on the driver cd).

Now, the HD problem.

In the bios, under IDE config, the first tab, halfway down, set your sata config to ide, not ACHI.

Use only one HD till it is up and running well with windows, cause for some reason this board does not like multiple drives unless they are in a raid setup.

These steps got me running.
 
Version 0509 2006/09/08 update



Description P5B Release BIOS version 0509

File Size 575.65 (KBytes)

Latest bios from Asus, it appears to resolve temp reading issues. Try it and see.
Click to expand...

I have an ASUS P5B mobo. I only see BIOS update version 309 on their site. Is that correct or a typo on your part? If it's not a typo, can you send me the link cuz I can't find it on ASUS web site. Thanks.

I was a cut and paste from their site. Sorry can't link. I just followed the downloads button on the P5B product site, and then reselected the P5B, and it gave me that Bios Update.
 
You need to supply more info. That kind of boot thing is usually a RAM problem. Check to make sure the timings are set right, etc.

You will have a hard time killing a Core 2 Duo. My stock HSF sucked balls and I could hit the throttle (it is 85c) at stock speeds. If you ever get to Windows you can use Everest or RMClock to watch it throttle if those temps are real.

Now I run 35c/45c load at stock speed...
Click to expand...

Interesting, mine stock HSF seems to work fine. I agree the throttle is the only way to see if the temps are real, what does it throttle to? 6x or even lower?
 
Alright I downloaded CoreTemp, and thte core temps are about 71c. On MotherboardMonitor, it shows 74c.

I have updated my BIOS as well, and I haven't tried the throttle testing yet.

And by the way... yes I took that crappy stock paste off...
 
Alright I downloaded CoreTemp, and thte core temps are about 71c. On MotherboardMonitor, it shows 74c.

I have updated my BIOS as well, and I haven't tried the throttle testing yet.

And by the way... yes I took that crappy stock paste off...
Click to expand...

Alright, that blows my theory out of the water if it is still showing interesting temps after the Bios Update.

At 70 ish I'd imagine it would be getting close to throttling, find an app that you can monitor the speed with RM clock works OK for this, but for me gives dodgy temps, and see what happens when you load it up? As a earlier poster said, if it throttles at 100C then you kow you have a offset problem, if it throttles at 80C then you know you have a hot chip.

Of course it is your decision to do this and I take no responsibility for the results. You may decide that it would be better to send it back.

By the way what is your Vcore at the moment, at idle 1600Mhz, and at load 2400Mhz? It could be your Vcore is too high, which would be a mobo fault.
 
I just did the throttling test, and here are the results are... the CPU got up to 85 or 86 at most,
once it started telling me that my CPU is gonna blow up if I keep going.

Now I believe from the theories I've heard, this means that I have a hot chip.

Ok, my Vcore... Well on CPU-Z, where it says voltage (I'm guessing its the Vcore) its about between 2.250 - 2.300.


One weird thing though is that when I touch my HS, its actually quite cool, not what I was expecting.

Yeah I know, your gonna say I mounted it wrong, but I seriously don't think there is anything wrong with how I mounted it.

Actually, if you want, I can remount the HSF and take pictures so I can show how I do it.
What I do is clean the top of the CPU and bottom of the HSF, put a drop of Arctic Silver on the center of the CPU,
and mount the HSF, which I make sure is fully pushed down... which I hate doing because you have to push so hard on the mobo.
 
Sorry I was away, that Vcore is very very very wrong.

Should be 1.1V at idle and 1.3ishV at normal working voltage.

Thats why you are a bit hot

Now why it is happening I do not know.

However it is possible that this has caused damage, start talking to you supplier on monday.
 
In which case it is casue for an RMA I'd say. I was a little surprised to see that it was still working if it really is >2V seems odd as voltage is a piece of cake to measure, I can understand them getting temp wrong, but Volts seems wrong to me for that kind of error. It would also explain very well the high temps.

RMA the Mobo and CPU and see what happens.
 
Let me ask you a stupid question, are you sure the temps you are reading are Celsius and not Fahrenheit?

Assuming you have set the HSF right, are the temps still high after you updated the bios? Did you get the bios from Asus website? Try installing PC Probe which is in the Asus CD and look at the temps and vcore there. If vcore is showing 2.0+V, something is seriously wrong because the system will never boot at that vcore.
 
Alright, I've just re-applied the HSF and thermal grease again, and guess what?
The temps went down! BUT only to about 51c idle.

I'm going to install PC Probe and give you guys the info on that.

And no... lol they're celcius 😛
 
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