Date: Tue, 13 Jun 2000 14:57:23 -0400 From: "Generic Player" <generic@unitedtamers.com> To: "Jim Freeze" <jim@freeze.org> Cc: <freebsd-questions@freebsd.org> Subject: Re: Overclocking AMD K6-'s and FreeBSD Message-ID: <005601bfd569$35f0f750$0100a8c0@x> References: <Pine.BSF.4.21.0006130618070.74165-100000@web2.sea.nwserv.com>
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----- Original Message ----- From: "Jim Freeze" <jim@freeze.org> To: "Generic Player" <generic@unitedtamers.com> Cc: <questions@freebsd.org> Sent: Tuesday, June 13, 2000 9:27 AM Subject: Re: Overclocking AMD K6-'s and FreeBSD > > On Mon, 12 Jun 2000, Generic Player wrote: > > > Who installed your chip, what is its core voltage, and how warped is the top > > surface? There were alot of problems with the higher clocked k-6 II chips > > giving off too much heat, particularily the older 2.4v cores, and making > > the system unstable. If yours is pretty warped I would suggest lapping it, > > and make sure it has thermal grease on. I can't stress that enough. Actual > > computer stores with certified technicians constantly leave out the thermal > > grease when installing chips, and it can be the major reason for such high > > heat. > > I have a 2.2v K-6 II. I previously had a 350MHz K6/2, but I could not get > it working due to random panics and reboots. > > I now have installed a 450MHz K6/2 (nice flat surface) with a large > hintsink with thermal compound and am clocking the chip at 400MHz and it > runs fine. > > I was told (don't know how true this is) that a bad batch of K6's got out > that were frequency challenged. With my luck, it is true and I got one. > > ..And yes, the guy who sold me the chip said he never used thermal > grease. All he knew was windows. I guess he didn't have too many > problems with windows, but freebsd seems to work the cpu much harder. > > Jim > > He probably did have stability issues and just blamed it on windows. I find that happens alot. Does your motherboard have a thermal sensor? If it does, and the temp is normal than it could be a bad chip, but the k-6 line was almost as bad a cyrix for heat output, I have had to lap everyone I owned. Doing nothing but lapping one down to copper took the temp from 49 to 42. Most aren't that bad, but it still makes a difference. Also, is your BIOS set to enable k-6 write allocate? And is your kernel? I found that enabling it in the BIOS, but not in the kernel caused problems as well. And that enabling it under windows could just plain cause problems. Generic Player To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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