On Tue, 19 Mar 2002 20:36:36 -0800 (PST) "David Guntner" <[EMAIL PROTECTED]> wrote:
> Tom Brinkman grabbed a keyboard and wrote: > > > > On Tuesday 19 March 2002 13:13, David Guntner wrote: > >> > >> Those sound useful. :-) Are they on one of the CDs, or do they > >> have to be downloaded from somewhere? Currently, the only way I can > >> check my CPU temp is to reboot and then go into the BIOS - not the > >> most optimal way... :-) > > > > The temp displayed in bios is for the most part useless. The > > system hasn't heated up yet, and HLT's (halts) aren't being sent by > > the kernel to the cpu. So while there's little load, there's no > > idling either. Cpu core temp can rise and fall dramatically with load. > > Shut down for some time, I'll see cpu temps from bios that are just > > above room temp (~30C), but by the time I get to KDE they're in the > > normal mid 40's. > > Unfortunately, krellm doesn't seem to display my CPU temprature, so I'm not > sure how I'm going to monitor it. BTW, just so you're aware of it, my > Linux machine (ML 8.1) is *never* powered off unless I'm having to get > inside the case to connect/disconnect something. So the temprature should > be staying pretty stable inside. > > I believe you on the CPU temp changing as the load goes up and down, I just > don't know how to actually monitor it while the system is running, since > those utilities don't seem to know where the CPU temp is being reported. > > >> I went to AMD's site, and while I could find a PDF document titled > >> "AMD-K6- 2 Processor Data Sheet," the Thermal Design section only says > >> that it's supposed to run with a case temprature within a > >> certain range. They also don't mention the 550MHz chip. > > > > Well, maybe you can get the info somewhere, but it should be on > > their site. FWIW, my 1.4/266 Tbird is spec'd at 95C, but the 1.4 is > > also the hottest cpu AMD makes. Your K6 should be lower, 80C, maybe > > 85C is probly a decent guess on the high end, but it could be in the > > 70's. > > At least when I reboot to look at it in the BIOS, it's well below that. > > I'll keep looking, but if it isn't in the "Themal Design" section of the > Processor Data Sheet, I'm kind-of at a loss for where to look... :-) > > >> I'm kind-of one step ahead of you there. :-) I pulled my 550MHz chip, > >> thinking that the problem could be with the CPU, and replaced it with > >> the old 350MHz chip that the 550MHz chip had replaced > >> originally (I tend not to throw away components when they get > >> replaced :). So the heatsink has a nice fresh coat of heatsink > >> grease on it, and I did blow everything out and reseated several > >> connectors (can't remember if I got them all or not, though...). > > > > Without gettin too far into it, cpu's that are run too hot, too > > long experience 'cpu creep'. There's actual migration and increased > > resistance of the internal components. Once that's happened, there's > > no going back. So it's good policy to monitor temp, and test > > occaisionly with memtest86 and cpuburn. Another benefit of > > monitoring cpu temp is you get early warning of runaway procceses, > > even if the system seems fairly normal in use. > > I agree. Again (just for information), the 350MHz chip that's in there now > never gave me any problems. I upgraded to the 550MHz chip to get more > speed, nothing more. I fell back to the 350MHz chip in an effort to see if > the problem was with the CPU. I'm running a different CPU but still having > the same hang problem, which is why I'm kind-of doubting a problem with the > CPU at this time. I'm persuing the testing information that you've been > providing because A) I'd like to be as sure that it's not the CPU as > possible, and B) I find the discussion to be quite interesting and > informative. > > Thanks again for all the information and suggestions. > > --Dave Dave when you switched CPU's did you use the same fan? If it isn't moving enough air it would cause them both to do the same thing. Having run a lot of k-6's from 300 - 500 mhz I've found that ideal temp for the "stock" fan is about 50 celcius and with a high end fan you can get down to about 42 to 45 (it improves benchmarks ever so slightly) under normal load. James > > > > >
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