DIP switch settings for CUBX-L?

  • Thread starter Thread starter Chris Scott
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C

Chris Scott

I've got my hands on one of these boards and would like to drop in a
PIII/1ghz processor but the manual (from their site0 doesn't detail the
correct jumper settings for a processor running that fast (and yes, I've
upgraded the BIOS so that it'll support 1ghz).

Can anybody point me in the right direction?
 
Chris said:
I've got my hands on one of these boards and would like to drop in a
PIII/1ghz processor but the manual (from their site0 doesn't detail the
correct jumper settings for a processor running that fast (and yes, I've
upgraded the BIOS so that it'll support 1ghz).

Can anybody point me in the right direction?

DSW has three sections:

DSW switches 7..10 set the bus frequency. This frequency should not
be greater than the capabilities of the processor and the ram (chipset
as well for that matter). If the processor was a 1000/100 and your RAM
was PC100 or PC133, you could use 100MHz. If the processor was 1000/133
and your RAM was PC133, you could use 133MHz (if you had PC100 ram,
then 100MHz would work for the ram and leave the processor running
underclocked).

Also, notice in the dip switch tables, you can select 133/33.3 or
133/44.3 . You want to use the first of those two, to keep the PCI
in spec. Sometimes the IDE interface on the motherboard doesn't work
well above 37.5 or 38MHz, so running a PCI clock of 44.3 would
cause problems.

DSW switch 6 sets the AGP divider. For a choice of 100 or 133 for the
FSB in the first step, a divider setting of 2/3 is the one to use.
When running at 100, the AGP frequency ends up at 66MHz (in spec).
When running at 133, the AGP frequency ends up at 89MHz (AGP is
overclocked). This is normally not a problem with recent AGP video
cards, with perhaps the exception of Radeon 9700. I've seen at
least one report that it could only handle 75MHz.

DSW switches 1..4 set the core multiplier. For any processor you'd
be interested in, the multiplier is locked inside the processor, so
the switch settings are ignored by the processor.

The manual doesn't explain what DSW 5 does, so I'm not going to guess.

That is how I interpret the manual.

HTH,
Paul
 
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