motherboard going to hell???

[deep_sky]

i have a pcchips motherboard (599lmr version) and an amd k6-2 450 processor....has anyone had any kind of overheating problems with this combo???? /forum/frown.gif i cannot run anything intensive on the cpu without getting the temp up to 120F...i am currently running rain in a seemingly vain attempt to keep the cpu cool, because it has been going up slowly and then going down and then up again in an endless cycle. /forum/frown.gif.....
if anyone has this problem please let me know what you did (other than the obvios cooling solutions).......would this be fixed with a new processor or is it a board problem???
please help...

[Peter M]

Hi!

CPU intensive stuff will bring the processor closer to its maximum power draw, and heat will go up.

Software CPU cooling is useless here, as what it does is halt the processor when it's idle - which it is not while computing stuff.

Check the voltage setting (M599LMR: in BIOS setup, CPU setting page) to match what it says on your K6-2/450 (2.4 or 2.2V). If it's not correct, switch to "User Define" mode and adjust manually.

If everything's set correctly, temperature rising with CPU load points to an insufficient cooling solution. Use a good fan/heatsink combination, mount using thermal paste.

Regards, Peter

[deep_sky]

yeah I have checked the bios and it matches what the cpu plate says. i have taken seti off so the cpu is running idle most of the day. but it was still running around 110 or so, so I put rain on it and it went down to 95 for a few days and was at 105 sustained yesteday..today it is at about 100 with rain active...i am working on the cooling solution. have to break the case open again to determine what kind of sideways clearance i got so I can get the biggest hs/fan combo that i can stuff in such a tight spot.

someone else in another thread said that if the current cpu is partially burnt-out, it is slowly toasting the mobo as well, is this true and why so???

thx

acr4

[Chainsaw]

deep_sky,
I thought you were getting a new processor with heatsink (and fan?) from the place you bought the computer. Are you still running a CPU without anything to keep it cool? If so, why? Shut 'er down till you get the proper equipment. I personally don't know if it will fry your motherboard or not, but why take a chance. Granted, it's a bit of an inconvience to wait for anything when you want to use your computer, but relax, kick back and read up on fans in Computer Shopper for a few days, wait for the replacement and make sure that you do all you can to keep it cool when you install it. (be sure it has a CPU fan, if not get one, get a chassis fan if you don't have one) After you install the "cooled CPU", use only one source for getting your CPU temp for a while, preferably the BIOS.(And force yourself not to check it more than twice a day)
Most of all, don't get too hung up on the temp thing, once you take the steps to dissipate the heat, search for other possible reasons for slow system operation, it may not even be related to CPU temp.
Good luck, stay cool /forum/wink.gif
Chainsaw

[This message has been edited by Chainsaw (edited 11-04-1999).]

[john robbinson]

I have the pcchip m598 w\cyrix 333 use to over clock 3x95 & 2.5x100 use to reach 59c translation 140f i even would shutdown and check bios which would give me both c.& f. in windows used AMI client manager. without overclocking 3x83 55c steady translation around 129f i dont watch it anymore.have great heatsink&fan plus case fan! morel of story cyrix's are hot or **** but i like it for now. P.S. truth is i don't over clock any more because harddrive is failing don't know if it hurts it or not?

[john robbinson]

Oh and use thin layer of thermal past!!!!

[Peter M]

Hi again.

John, the M598 board has correct peripheral clocking and timings at all selectable CPU bus speeds, so don't worry about any setting damaging your harddisk. However, insufficient overall system cooling will affect harddisk reliability first, before all other components, as HDs are specified 55 or even 50 degrees C maximum, and to my experience they start failing at very little above that.

As for the Cyrix processors running hot - that's true for the 2.9V types, the new 2.2V thingies have amazingly low power consumption. To add to that, the Cyrix processor's "typical" heat dissipation is a lot closer to its "maximum" than on AMD K6 series, meaning that a Cyrix will have an average temperature that is close to its maximum temperature under heavy computational load, while a K6 will stay a lot cooler under normal load. Add to that that many BIOSes forget to enable Cyrix Suspend-on-Halt, which would cool them a lot with normal applications in NT or Linux (or with Rain/Waterfall/whatever installed in W9x).

Regards, Peter

[Axel]

This may be a silly question - but is there a good reason to leave the case on? - Is your system sitting on the floor close to dust and other bad things? - If you do have to leave the case on because of kids or pets, get out the ole' black & decker drill and put a few extra holes in the case. You could drill a nice pattern and mount another fan right there on the side of the case to add some air-flow.

Also - have you considered that the current CPU is probably already "kaput" at those mentioned prolonged temps, and is probably ready for butter as is any other good piece of toast.....

[john robbinson]

thanks Peter Missel
I always count on you for answers on pcchip m/b those wear hidden qeastions are you sure you don't work for pcchip?

[deep_sky]

LOL /forum/smile.gif I should hope not, I know I would be embarrassed to.
My computer is sitting right in front of the kitchen counter so I have counted it a good idea to keep it covered in case of flying objects.

if the processor is "kaput", then why is it still running at 451.02 mhz?? i would think that if it was failing, the cpu would be losing mhz as it goes ( i found this neat little program that tells you your clockspeed in real time...got it at www.ugeek.com (http://www.ugeek.com) )

i am trying to use the computer as little as possible, but as a computer information systems major, i have to use it sometime ( campus computers suck worse than mine for stability)so I am waiting on that new cpu i should be getting.........

[Peter M]

Hi again.

John, no I don't work for PC-Chips - I just use their boards a lot. And I have quite a bit of insight into what the various x86 chips and chipsets can and can't do, since I'm a BIOS developper.

deep_sky, processors don't lose MHz, someone's pulling your leg there. The frequency is preset from the mainboard, and your individual processor will or won't work at that speed. Yours obviously does work, yet everything you describe points to nothing but plain classic insufficient cooling.

Regards, Peter

[deep_sky]

okay Peter...
thanks..i have heard so many different stories from my friends and ppl on this board. i am waiting on new cpu (hey it cant hurt to have a new one /forum/smile.gif ) and i am also looking into a larger case so I can get a bigger heatsink into it. if i get this stuff then hopefully i can do what i want with the comp without worrying about toasting cpu.

[TcMatic]

Open the case and don,t close it
Connect the black wire from the fan
On the -5 volt wire
So the fan runs on 17 volts
A nother thing try to suck out the air
out of the case
Let the fan suck instead of blow
When u let the fan blow the hot air will flow over the mobo and heat it up
About the 17 volts
Not al the fans can handle it

succes