Celeron 1.0A

[homenetman]

Trying to get a new Celeron 1.0A (Tualatin) above 125FSB. Board is a Shuttle AV18e that allows FSB steps of 1Mhz and voltage tweaking. Board runs stable at 120FSB at default voltage. Going to 125FSB requires just a little more (1.550 or so). However, it appears even going to 1.80 will not let it boot to 130FSB.

I'm using stock heatsink/fan and kept the Intel pad on the fan. Wondering if I should remove it and put some good grease between the fan and CPU. Any other ideas?

[Yodums]

You should really replace the heatsink and the thermal compound with Arctic Silver 3 altogether.

Consider a:

Millennium Glaciator II - Heatsink 35.00
Arctic Silver 3 - Thermal Compound - 11.00

It'll really help.

Yodums

[takiwa]

DO what Yodems said first...cooling is the issue. After that, a burn-in would do it. It seems that these tualatins are strong chips, but almost all have required a burn-in to hit the high FSB's. Raise your voltage to max, drop FSB to 66, and run some haevy benchies for a day or so...Prime95, Sandra, 3DMark2001...all with GOOOOD cooling...then see what it does...

[tomblue]

homenetman -

Hi, I have the same CPU/board and having issues with overclocking it. You say you're able to get it to run stable at 120MHz FSB at 1.475V. Can you tell me your BIOS settings in the "Freq/Voltage Control" menu, and any other settings you changed from default? ALso - do you know what your AGP and PCI run at, with the 120MHz FSB setting?

On my board, when I try to set 120MHz FSB, the system does POST, but after the initial Windows ME screen, it gets very slow...loads from disk, then pauses for a few seconds, and so on...almost reaches the windows desktop, but I usually run out of patience before then.

What OS are you running and was it a clean install?

Thanks
tomblue

[Celemine1Gig]

I think I know the reason for your problems. In my opinion the board just doesn't switch the PCI divider to 1/4 at frequencies under 133 MHz FSB, thus your PCI speed is way ot of spec at about 40 MHz+.
Try running the chip at 133 MHz FSB with a little voltage bump. That should be absolutely possible and stable!

FSB frequencies from 112Mhz-129MHz are very critical if your mobo doesn't switch the pci and agp divider automatically.

So try 133 MHz FSB, as aI said, and report your results.

Good luck

Regards

Ingo :D

[FTC]

Hi,

Yes, I agree with Celemine's comments. I would first try 133 directly, with something like 1.625 volts, AND your current heatsink correctly applied... I have run at that voltage and frequency with stock HSF no problems.
... So, if it works like that, you *may* have saved spending on a new HSF. If it does not, at least you know... but the key looks like trying 133, which will give a PCI of 33 ... on spec.
(Also start by using well known PC133 memory, 1 stick with conservative settings, i.e CAS3, just so that you can be sure that any problem is caused by the CPU)

Regards
FTC