41 C is too hot?

[LIVAN]

Ok, I got a very strange problem....

I have an ABIT KT7A with 1.4ghz Tbird, Alpha 8045 with 50cfm YS Tech fan.

When I have the case open...My max load is 38 c adn I can run Priome 95 for 24+ hours

But when I close my case...Whenever the temp reaches 41C, The system bombs out, reboots , locks and the who package....

I know I obviously have an air flow problem but
I have read people able to run things up to 50 C, why can't I go past 41c?

Please give me your thoughts...

 

[Budman]

this is general hardware, cases & cooling forum..

you'll get better replies there.

 

[Jeff7]

Something's not right there; I had a heatsink that wasn't quite seated right; the thing reached 77C before I smelled the AS getting cooked. The chip survived amazingly, but the AS had turned into a reddish powder. But the computer never even locked up though.
I have a computer running 59C stable (it's my "testbed" computer; has a Volcano 2 on it )

 

[damocles]

<< this is general hardware, cases & cooling forum..

you'll get better replies there. >>



I think he posted everywhere

 

[Jerboy]

<< Ok, I got a very strange problem....

I have an ABIT KT7A with 1.4ghz Tbird, Alpha 8045 with 50cfm YS Tech fan.

When I have the case open...My max load is 38 c adn I can run Priome 95 for 24+ hours

But when I close my case...Whenever the temp reaches 41C, The system bombs out, reboots , locks and the who package....

I know I obviously have an air flow problem but
I have read people able to run things up to 50 C, why can't I go past 41c?

Please give me your thoughts... >>



Well the problem is somewhere else.

Try memtest86 to check the memory integrity. You shouldn't get any errors at all.

Secondly, are you sure you didn't crush your CPU? After failing to solve problems with common troubleshooting technique, you need to take off the heatsink and physically inspect the top of your Athlon for any cracks or chip.

 

[LIVAN]

Well Thanks for the quick responses...

As for crushing my CPU, I don't think so, this thing is working 24 hours prime 95 with case off and Temp held at 38c, if the CPU was crushed, I would think it would not be working 24 hours straight at high load case on or off.

I thouhgt aboutt he Heat sink not seating right but if that is the case, it should not run for 24 hours either with the Temp help at 38c with case off right?

Any time it reaches41c the system locks...I cannot understand that.....

 

[Motero]

maybe the temp. gauge on the motherboard is bad and you're really running at 30-40 degrees hotter? I've never heard of this...but is there maybe some weird setting in some program or something that tells your pc to lock up at a certain degrees? Is it a video card heat issue?

 

[Jerboy]

<< Well Thanks for the quick responses...

As for crushing my CPU, I don't think so, this thing is working 24 hours prime 95 with case off and Temp held at 38c, if the CPU was crushed, I would think it would not be working 24 hours straight at high load case on or off.

I thouhgt aboutt he Heat sink not seating right but if that is the case, it should not run for 24 hours either with the Temp help at 38c with case off right?

Any time it reaches41c the system locks...I cannot understand that..... >>



A quick test for ya. You stated the sytem runs fine with the case removed and temp below 41 so boot up with the case removed and unplug the CPU fan and let it climb to 41°C. Its perfectly safe to unplug the CPU fan if you don't run it too long. This kind of thermal testing is rather common when testing semiconductors for thermally driven failure.

 

[LIVAN]

OK so if I run it without the case and CPU fan off. Let it climb, what Am I looking for? See if it still works over 41?

 

[Biochem101]

I wouldnt suggest runing an athlon without a fan running unless you want to see it fry. Personally I think thats an unnecessary risk you are putting on the CPU.

Check the thermal condition of your vid card, RAM, case Temp, and chipset. You could just have too much heat in your case and its spoiling the other components, not the CPU.


GL

 

[goog]

<< OK so if I run it without the case and CPU fan off. Let it climb, what Am I looking for? See if it still works over 41? >>


That's the idea, but you've literally only got a few seconds before that Tbird is gonna fry, so I'd try some options mentioned above first.
41C is definately not too hot, like was said either it is really higher than that, or something else is the problem.

 

[rbaibich]

DO NOT run your Athlon without a fan. It won't fry as quick as running without a heatsink, but the temp rises too fast while the temp monitor refresh interval takes too long for you to have control over it. If you want to do something like that, get an industrial thermometer to have accurate and continous temp reading, then you'll be OK.

 

[flood]

Make sure your fan is oriented so that it sucks air off the heatsink.
It should not be blowing air on to the heatsink.
And if you do not install the shroud, the screws will lift the heatsink off the cpu (or it will make very poor contact)

 

[LIVAN]

Anotehr odd situation with my system is the FAN HAS to blow to the sink. If I set it to suck and I have about 10 times after reading about how it should suck. BUt the CPU temp when I set it to suck becomes 35c instantly whereas if I set it to blow, it is about 30 at room temp. THis is truly baffling...

 

[TheNewGuy]

I've been running my 1.4 ghz amd up to 61 degrees without any trouble...heck, it's at 52 degrees right now...certainly 41 degrees is not too hot...

Dave

 

[Jerboy]

<< OK so if I run it without the case and CPU fan off. Let it climb, what Am I looking for? See if it still works over 41? >>



Basically. Enable the fan or shut off the system after it reaches 60 or so. You have plenty of time to work with, but you might fry the chip say if you get distracted and forget about it.

Heatsink is like a capacitor. It has some thermal capacity and CPU won't instantly climb to 250°C in 3 seconds when you stop the fan like it would without HEATSINK.

 

[Jerboy]

<< temp rises too fast while the temp monitor refresh interval takes too long. >>



Stop pulling answer out ya butt. You need to know the mass of heatsink, specific thermal capacity of aluminum and how many joules does CPU produce a second before you come up with any valid conclusion.

 

[Biochem101]

Better to err on the side of caution when flashing a lighter under a $100 bill.

Not only should he consider the things you mention, but about 3 -4 other factors you forgot to mention.

Dont run the athlon wihtout a fan. Its just not good at all, unless you dont care if you scarifice a CPU.

 

[Windogg]

AMD thermistors are notoriously inaccurate. Different mobos and even the same mobos of a different revision can give differnt reading depending on a variety of conditions.

The Alpha 8045 is a bolt on design and are not 100% foolproof. I am the fool to prove a improperly installed bolt on heatsink can torch a CPU. My guess is the screws are not on evenly and the heatsink is not sitting flat on the CPU slug. Perhaps some small portion is not making good contact.

Have you tried reinstalling the heatsink and turning the screws 1/4 a turn at a time? It's a slow and tedious process but the only way to guarantee a perfect installation.

Windogg

 

[flood]

<< Anotehr odd situation with my system is the FAN HAS to blow to the sink. If I set it to suck and I have about 10 times after reading about how it should suck. BUt the CPU temp when I set it to suck becomes 35c instantly whereas if I set it to blow, it is about 30 at room temp. THis is truly baffling... >>



Did you install the fan shroud??

 

[MDFusion]

my duron was running at 77 C,i thought that was normal but then i got artic silver and its at 48

 

[Muadib]

MDFusion has a point. Are you using a paste of any kind? It's should be a requirement with AMD chips.

 

[theplanb]

Oh no, you got the 41C virus!!!!



just kidding..


Well, that's bit odd. Did you check your MBM, or v-cool or whatever system monitoring tools' critical temperatures? maybe they are set up to shutdown at 41 or something.. also in the bios as well.
And is there any way that you can check the temperature on your videocard?