opps....burned that cpu up!!!!

[InTheClouds]

Ok, here is the low down. I recently put together a machine for my company with a 800 Duron. A couple of days later my boss comes by and tells me he needs the 800 but has a 600 that I can use in its place. Seeing as how when I placed the 800 in the machine it was recognized correctly I assumed that I could just take out the 800 and put the 600 in its place and that the POST would recognize this. Well, it worked for about 2 minutes and then started flaking out. Now the 600 is dead.

What did I do wrong? Just trying to make sure I dont make this mistake again.

 

[Whitedog]

Perhaps when you changed out the cpu you didn't properly seat the HS/FAN on it. and it fried..??

 

[InTheClouds]

Whitedog,

I made sure to put the heatsink and thermal goo on correctly. Maybe just a bad cpu.

Question: Can you just change the cpu like I did?(take one out and put the other one in?)

 

[Noriaki]

yes, yes you can as long as the BIOS recognizes the new one.
(if it recognizes an 800 it will recognize the 600)

Not sure why it would do that....wierd.

 

[Lord Evermore]

With some motherboards, you have to go into the BIOS to reset the CPU speed when it's changed. The BIOS sometimes has a setting that detects whether the CPU installed is a different one than what was set in the BIOS or last detected, just in case, so you don't end up applying 1.75 volts to a 1.6 volt processor.

What exactly did it do that it was 'flaking out', and how is it dead? Will it POST at all, give you any screen output?

 

[j00]

agreed evermore. on mine if you dont go into the bios the chip will still be clocked at whatever the original setting was. so going from 800 to 600 will still clock at 800 if i didnt go into the bios for it to auto update first, but then again that's just mine.

 

[BreakApart]

Agreed the BIOS should have been reset/changed to the lower setting before he placed the CPU into the socket. Basically you over-clocked the 600@800 and it lasted 2 minutes with default cooling.

By default most(if not all) motherboards are shipped with low-CPU(Mhz) settings so they dont do exactly what happened to this poor guy.

Another thing to remember not all CPU's use the same voltage so this is even more important(i.e. mainboards that are P2 and P3-Coppermine compatible, these CPU's use different voltages so overvoltage-heating can be a HUGE problem)

 

[Regalk]

That is providing he had soft menu. If (as I think he has) he has jumpers then he should have changed the jumpers on the mobo to 100 X 6 and the core to 1.50 voltage. IN all likelihood he may have used too high a multiplier and voltage.

 

[Looney]

Well, i still think that's odd even if it was OC accidentally... From my experience, unless the heat is extreme (ie, not having a fan), the computer would freeze before the CPU dies.

 

[WetWilly]

There's not really anything the BIOS could have done to screw up the chip, assuming it's a SoftMenu-type BIOS. It's not voltage, because on nearly all stock Athlon/Duron system boards (except one I know of) you can't set the voltage higher than 1.85v, and that's definitely not going to kill a Duron unless the chip had other problems. Heck, there are Durons out there running at 2.05v on modded system boards. It's also not the multiplier, since setting an improper multiplier simply doesn't boot or just flakes out - doesn't kill a chip. COnsidering the BIOS correctly ID'd the chip as a Duron 600, so it doesn't sound like the multipler was misidentified. And considering that virtually all Duron 600s will run anywhere from 800Mhz to 1Gig with proper cooling and voltage, I'd seriously doubt that running it at 800 would kill it either.

Those symptoms do sound like a cooling failure. I've seen something very similar happen when a heatsink with the plastic-covered PCTC pad was mounted with heatsink paste but without removing all of the plastic covering the pad. Works briefly then dies.

Need more details here - what system board? What heatsink did you use on the 800? Did you move the heatsink over to the 600 or get a new one? And like Evermore said, what do you mean by flaked out?

 

[Lord Evermore]

MoralPanic, a Duron/Athlon without a heatsink has been rated by AMD to fail within 8 seconds. If the heatsink were very inadequate, it might not last much longer.

InTheClouds indicated that the 800 was recognized automatically when he installed it, which would point to a soft BIOS, not use of jumpers. However there's still the chance that it came configured for an 800 in the first place.

Maybe he got an unlocked 600 and it actually booted at 800?