In article <rwX3e.1165$(E-Mail Removed)>, "KC Computers"
<(E-Mail Removed)> wrote:
> "Anthropy" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > A7N8X-E, Bios 1013, AMD 2600+, 1gig DDR 400 (1x 500MB, 2 x 512MB),
> > 80g HD, Geforce 440, WinXP Pro SP2.
> >
> > Hi,
> > I can't get my setup to run at 166FSB. It runs great at 133 but it
> > should run at 166, shouldn't it? When set to 166 it constantly reboots
> > or if it makes it into Windows it reboots the moment an intensive
> > program is run.
> > The CPU is rated to run at 166 so is the RAM. At the moment of reboot
> > the CPU temperature is about 58c and the system at about 39c, hot but
> > not that hot. The PSU is 440 so ok for the machine.
> > The PC is currently set to 133 and the POST reads the CPU as 2000+.
> > I've tried running the PC with one, two, three sticks of RAM, no
> > difference. > I upgraded the BIOS last night to see if that would help and
> > when the
> > PC rebooted the POST read 166 but it rebooted loading Windows.
> > I'm stuck, any help or suggestions would be greatly received.
>
>
> If the CPU temp is ~58C at reboot, then it can be getting too hot.
> We are a dealer and have seen Athlon systems reboot, lockup, etc.
> when the temp gets close to ~65C. Was everything working fine
> before or did you just purchase?
>
> Are you sure that your heatsink fan is installed properly?
> Did you use your old paste? If so, did you apply it in
> a very thin layer?
>
> ---
> Kevin Chalker, Owner (KC COMPUTERS)
> E-mail: (E-Mail Removed) Web: www.kc-computers.com
> Internet dealer since 1991!!! See WWW.RESELLERRATINGS.COM!!!
As Kevin says, check the heatsink. The contact area on the
heatsink is not centered for both possible orientations of
the heatsink. It is possible to rotate the heatsink, such
that the silicon die on the Athlon is only partially
covered. A piece of silicon die ends up with no heatsink over
it, and gets extremely hot. Even though the measured
temp might not look too bad, the processor is still under
extreme stress. The Athlon needs thermal paste or a thermal
pad, to ensure good thermal contact from CPU to heatsink.
You have FSB333 processor and DDR400 memory. I don't know what
the BIOS will use for defaults, but I recommend using
FSB333 (clock=166) like you were planning to do, and then
go to the memory speed setting, and set it to "100%". You might
think that the resulting DDR333 transfer rate will suck,
but at least see if the motherboard is stable that way. It
could turn out, that the DDR333 setting is faster than running
at DDR400 (120% setting). Running sync (FSB333/DDR333) can be
faster, as it is possible to remove some latches from the data
path while in sync, and the reduced latency that results, is
beneficial to the transfer rate.
Paul
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