k-3 400 o/c weirdness

[Guest]

I recently modded my case, and attempted to o/c my amd k-3 400 just for the hell of it. So I bumped the multiplier up to 4.5 and booted up. ram is counted, devices found, etc..but when it gets to the point where it shoudl ask me if I want to load up win2k or 98, it gives me and error message about Win2k needing at least 7mb of disk space..."wtf?" I say to myself. I restarted, same message. Turned off,moved the jumper back to x4, and everythign booted just fine. Then i tried the jumper at x5, and the same weird error message (which also says maybe i should look into upgrading my system!). So now i'm back down to x4...I'm thinking maybe I need to boost the core voltage? Or maybe my cpu just won't go any more?

I am on an Epox mvp3g-m (i think...one of the mvp3 epox boards), with 2 hard drives, win98 & redhat 7.0 on the primary and win2k on the secondary 20gig...

Help!!

~Chris

 

[LTJLover]

Haha, I have almost the exact same setup. K6-3 400 on Epox MVP3-G2. Those CPUs are known to be OC unfriendly. Mine won't do [-peep-] at 4.5x. I have built a water cooler as kind of an experiment. Not quite installed yet, but I doubt it will make much difference. If you can afford it, I'd say upgrade. Not to say the K6-3 is a bad CPU. To tell you the truth mine still does everything I need it to including newer games. I am trying to hold out for DDR stuff. Good luck.

Jon
"Water-Cooled CPU Runner"

 

[gregorarch]

Not sure how relevant this is, but I've got a K6-2 450 oc'd to 550 and it runs Win2K quite happily. It's on an FIC PA2013 mobo. Had to bump up vCore to 2.5v to get it past 500.

 

[Guest]

Hmmm, assuming that heat is not your problem it is most likely the core voltage. I had a K6-2 500 2.2v core and it would not even post @ 560 until I bumped up the core voltage to something like 2.9 - 3.0 volts.

 

[Guest]

I have an epox MVP3G and K6-3/400. I have had success with the fsb at 112Mhz but that lowered my cpu to 392Mhz. I had to upgrade my ram because the pc100 would give me memory errors. I have never gotten the cpu to run greater than 400 no matter what voltage setting i tried.

 

[Guest]

Strange how many of us seem to have the same set up.
Could it be down to motherboard bios or K3 chip revision. I've managed to clock mine to 450Mz. Won't go any faster though, but this proves the chip is clockable if only just.

 

[Guest]

I had a k63 400 and a Gigabyte GAX for a while and the only way I could get it to run faster was by modifying the FSB. That only got me an extra 20mhz. Didn't really see any performance gain, so I dropped it back down.

 

[TheSandman]

I have not had any k6 chips in quite a while but if you remove the aluminum top off of the procesor it reduces the temp considerably I dont remember the numbers. Be carefull it will be just like the Tbird/duron with the core exposed

 

[Lucol]

Hey, so no problems getting the voltage up that much on the K6-2. I've got a K6-2 400Mhz @475 but I'd like to try to up it more if I can, but I didn't want to put the voltage any more than 2.6. You think I can up it a little more without frying it?

 

[Guest]

I managed to POST my K6-II 400 at 475 at 3.2 volts (!!!) I wouldn't recommend such a high voltage without massive cooling, however. I only ran mine for about 5 minutes before it just got too hot. But the chip survived...no telling how long it would last at such a high voltage though.

-Skaven
Webmaster, Lunar Power
http://www.lunarpower.org
AOLIM: SkavenK

 

[Lucol]

I guess I lucked out, I've got practically a no name board, PCPartner MVP4, and I took a shot at 500Mhz with my K6-2 400 and it worked just fine at 2.9V. Windows Me ran just perfectly(I'm running Rain to keep it cool, otherwise it would definitely overheat), but just a few minutes of high CPU usage, SETI or some game, it would overheat and freeze up. I'm sure if it had something better than the AMD HSF it came with, it could run fine. So I took it down to 475 at 2.5V, and it's running perfectly, I'd even say more stable than when I had it at 450Mhz at 2.4V, but I've only had it running like that for a few days. So far so good.

 

[Ncogneto]

The k6-2 are more overclocker freindly then the k6-3's are. The l2 cache on the k6-3 does not like being overclocked much at all.

A little bit of knowledge is a dangerous thing!

 

[Guest]

I've got an Epox MVP3-C2(that's the AT spec) with a K6-3 450+ @ 550 and as solid as a rock at 2.0 volts. Goin' to try 112mhz FSB soon.