ASUS P2B-F mb max Core:Bus Frequency Multiple?

[ideogram]

I have an old ASUS P2B-F motherboard. The manual for it shows jumper settings for Pentium III up to 550MHz, using a Ratio of 5.5x and Bus F. of 100MHz. But there is a Celeron setting using a Ratio of 7.0x, and if I decode the jumper settings correctly it is possible to get a Ratio of 9.5x, which would yield Frequencies of 700MHz and 950MHz respectively if I combined them with a Bus F. of 100MHz. So what is the actual maximum safe multiplier I can use on this board with a Bus F. of 100MHz? What speed Pentium III should I buy?

 

[Crashman]

Buy any Pentium III you like! Look at the bus speed settings for overclocking, there is a setting on that board for 133MHz FSB with a 33MHz PCI bus. Also, no need to worry about multipliers, all PIII's and Celerons are multiplier locked, no matter what you set it at for the multiplier, it will always use the one programed into the chip.

There was a problem with the earliest revisions of P2B's where they would not support any processor lower than 1.8v core. I don't know if the -F was affected, or what board revision you have, but the workaround involves forcing the lower voltage processor to be recognised at 1.8v core. This operation is easiest with a Socket 370 processor, so I recommend one, using a Slot 1 to Socket 370 adapter card. Another reason to go that rout is that much better coolers are available for sockets than for the SECC2 slot 1 package.

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[Crashman]

More specifically, I would use a PIII 1000EB on it, some PC133 memory, and any card newer than a TNT2 (because the AGP bus gets overclocked).

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[ideogram]

I have 512M PC100 memory and a TNT2 video card so I'm stuck with a 100MHz bus freq. The mb is labeled Rev. 1.00, what would I have to do to force lower voltage cpu's to be recognized at 1.8v core? Also I really don't want to spend more than about $50 for the cpu; do you know a good place to shop? I'm already watching eBay.

Thanks for your help,
Adam

 

[Crashman]

Depending on the core voltage, you usually just wire a couple pins together on a socket 370 CPU. That's why I suggest that, with a slotket. Probably version 1.0 needs that setting, 1.80v or higher.

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