Rebooting due to CPU-failure?

[slashDevSlashNull]

I've got problems with a computer that reboots spontaneously when running heavy tasks.

I guess the problem is heat relatet, but I'm not sure. The CPU is not running _very_ hot (max 60 degree C).
The CPU is a XP2500+ and the problem still persists when underclocked to 1 GHz.

I've heard somwhere that reboot often is due to CPU failure, but I don't know.

I guess that I will soon be adviced to buy a more powerful PSU, since I use a 360W right now. But I don't think that the PSU is the problem since the CPU still reboots when seriously underclocked(XP2500 @ 1.0 GHz) and the very same PSU handles an overclocked XP1700 on the same system without problems.

Could the CPU suffer from some kind of manufacturing fault? As long as it doesn't reboot, everything seems to work perfect...

What do You think about this?

 

[slaves123]

I've the same problem with a 1700+ @ 1667 MHz = 145 * 11.5
I don't have any idea... first it seem to be the temperature, but i'm not sure, in your case, believe that 60º is too much... consider buying a new cooler

 

[Shimmishim]

60C's is hot enough to cause reboot issues like the one you're having...

why don't you try getting a better cooler first or dealing with the temperature issue first....

as long as your PSU isn't some POS generic psu, you should be okay with your voltage rails and what not...


even when it's underclocked to 1 ghz, are the temps still in the 60C range?

 

[lxie123]

The comp in my sig runs at 69~70 C when under max load with the stock hsf...prime 95... or video encoding.
No reboots , problems or crashes though , should i still invest in a cooler?

I don't see why it gets so hot, voltage is set to stock 1.525.. Actual(1.47)

Antec 3700AMB Case temps are 30~32 with 2 120 mm fans.

I think the is7 is reporting the temp wrong.. How do i check for sure?

 

[Shimmishim]

all abit motherboards for some reason or another report the temperatures too high for some reason or another... unless abit enables a way for the temperature to be read directly off the die, i don't think there is any real good way (maybe putting a temp probe on the core)...

most programs use some sort of algorithm or something to calculate the temperature because the temp is being read off of a diode beneath the socket of the chip...

 

[VIAN]

What kind of heavy duty tasks. Maybe its not your cpu, 60 doesn't seem too bad. Try thinking to see if other components are the problem.

 

[myocardia]

Slash, your CPU temp is the problem. I've actually had problems with my Athlons (3 different ones) at 56 C! Neither were Bartons, BUT all Athlons, including the Bartons, can't run anywhere near as hot as Intel's processors will. According to AMD, Bartons are only rated up to 60C MAX. The way I solved this problem is by mounting an 80mm fan directly over the processor, on the side of the case. That's all it took for me to go from 49C IDLE at 2.0Ghz (the factory default!) to 40-41C full load at 2.4Ghz with my XP2400. And I did the same with my daughter's computer (yes, I built my 9-year-old a computer), and her XP1700B runs full load now at 36-37C, even though it's overclocked some, and has the factory heatsink/fan. Oh yeah, those temps are with a room temp of 72F.Text

 

[slaves123]

But I've a 1700+ running at maximun of 50º , it's overclcoked to 1667Mhz
145*11.5 and have some problems, some of you know why? I really believe 50º is not too much, but i'm considering in buying an ThermalTake Extreme Volcano 12 that should help and allow me to push it up to 2200+ perhaps more... thanks for your help

 

[myocardia]

Slaves, I don't think 50C is too hot either. I don't believe buying a new heatsink is going to help your problem, HOWEVER, buying a good, high-quality heatsink is never a bad idea. Some things are worth what you pay for them, and heatsinks, imho, are one of them.

Do you have the latest drivers for your sound/video loaded (and are they up-to-date)? The reason I say that is because almost all drivers for onboard audio & video are up-to-date at first, but they never seem to provide updates, so you may have to consider adding a sound card, or video card, if you don't have them. You have to be careful when and if you decide to "upgrade" to a later, newer version of DirectX. That can cause more problems than you would ever imagine, and the problems can happen so randomly, it can be hard to figure out why they're happening.

 

[WA261]

50c is NOT to hot, but I thought you said 60c??

I run my work rig at 2.4 (1700) on air at 53c. Never a problem.

 

[slashDevSlashNull]

It was my CPU that reached 60 degree C when running Sandra burn-in-wizard repeatedly with only CPU benchmark enabled (harddisk, ethernet etc disabled).

I have just mounted a new HSF (Thermaltake Silent Boost) and so far I'm doing fine. So I really hope that the temperature was the problem.... but I'm about to do some torture-tests on my rig tonight to confirm this.

 

[Jeff7181]

Originally posted by: myocardia
Slash, your CPU temp is the problem. I've actually had problems with my Athlons (3 different ones) at 56 C! Neither were Bartons, BUT all Athlons, including the Bartons, can't run anywhere near as hot as Intel's processors will. According to AMD, Bartons are only rated up to 60C MAX. The way I solved this problem is by mounting an 80mm fan directly over the processor, on the side of the case. That's all it took for me to go from 49C IDLE at 2.0Ghz (the factory default!) to 40-41C full load at 2.4Ghz with my XP2400. And I did the same with my daughter's computer (yes, I built my 9-year-old a computer), and her XP1700B runs full load now at 36-37C, even though it's overclocked some, and has the factory heatsink/fan. Oh yeah, those temps are with a room temp of 72F.Text

That's incorrect... I ran my XP2500 @ 2.3 Ghz at 60C (measured from the internal diode) for months... and AMD rates T-Breds at 85 degrees C and Bartons at 85 degrees C also.

 

[pspada]

Is any part of your system overclocked? If so, set everything back to the normal settings, and see if the problem persists.

 

[slaves123]

First of thank you very much myocardia, I've made some changes to the processor to overlock it less than 1.67Ghz, the most important is that I drop the voltage to 1.50 that is little, but it still at 50º with FULL load, i had also cleaned the core with isopropilic alcohol to ensure there was no crack in it, and fortunatle there is no one, with just a few degrees less i make some tests and it doesn't reboot! It was running only for half an hour, but before that was enough to cause problems, no it do not, but when possible i will make a long test to ensure if the problem persist, also I believe that there is some possibility that the Windows XP Kernel in this installation damaged in some way, thats sound impossible... I know, but after all it is Microsoft and will reinstall it just in case, thank everybody for your valuable help and good luck in your case Slash, I will keep an eye in this post, this really insterest me, if I get something new you will know sure.
See you all

 

[slashDevSlashNull]

pspada,
Of course I reset everything back to default/conservative when the problems emerged but it didn't help much...

About the rebooting problem,
After some testing and fiddling around I'm sure the rebooting problems was due to poor cooling. My old HSF managed an overclocked XP1700, so I thought it could cope with a XP2500 at stock settings.... but no. The old HSF was a pretty cheap extruded all-aluminium. With my new all-copper HSF I have no problems at all! (at least not yet...)

By the way, another question on the cooling topic:
Does the Barton core have a built-in temperature sensor inside the core? or is the temperature reported by BIOS read from the thermal diode mounted on the motherboard PCB right beneath the CPU? Maybe this is diferent with different mobos? (I have a Abit NF7-S v2.0)

Thanks everybody for help and suggestions so far!