celeron 500 ==> o/c

[-Psyduck-]

The PCI bus is made to run at 33Mhz and AGP at 66Mhz. The m/board creates this frequency by applying a division on the CPU speed. Hence when CPU is at 66Mhz bus (celerons) the m/board applies a 1/2 division to create 33Mhz and 1/1 for 66Mhz. When the CPU is at 100Mhz (anything else) the division is 1/3 to create 33mhz and 2/3 for 66Mhz. Therefore when you overclock your CPU bus to 83Mhz the division is still either 1/2 or 1/3 for PCI and 1/1 or 2/3 for AGP.

If my BIOS only allows me to set 1/2 PCI for 83 then the PCI bus will be at 41.5Mhz which is therefore overclocking everything that is on my PCI bus i.e. cards.

In the BE6-2 the 1/3 PCI option does not work (even though you can change) until around 92Mhz CPU bus.

This is exactly the reason defrag screwed up your windows.

[anangia]

hey duck

thanks for the awesome explanation...
but then again (i love ask'n ?'s)
so why did defrag crash when my bus speed was at 83 mhz
and why does b6 only work with 1/3 for pci at 93mhz fbs..??

so many ?s so little time

hope u don't mind
thanks

[Duckman]

anangia:

"so why did defrag crash when my bus speed was at 83 mhz
and why does b6 only work with 1/3 for pci at 93mhz fbs..??"

It crash because the PCI-speed is too high, your harddrive simply cant keep up with it.
As psyduck said, when you overclock your CPU bus to 83Mhz the division is still either 1/2 or 1/3 for PCI and 1/1 or 2/3 for AGP, leaving you with a PCI-speed at 41,5..

Now, I have the BE6 II myself and have the ability to set the divider to 1/3 at 83 MHz. Why that doesn't work on your board I really don't know. It could be the BIOS, so my suggestion is to look for a BIOS-upgrade.

Hope this helps!

Duckman


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[coldfusion0]

i agree duckman ,
i also have the BE6-2 and i can use the 1/3 divider at what ever speed i want! i can even use the 1/4 divider.
i have got to say this board is =one of the most stable i've ever seen!i am only 66mhz behind duckman with his setup and i'm only using air!!I WILL CATCH YOU DUCKMAN!!!!just lend me your water cooler

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ask not what you can do for your computer...
more what your
computer can do for you. *Hint Hint*

[drjohnsn50]

I have my 433 Celly at 546 on my abit be6-2. The pci bus is 84. I have it set at 1/3 pci and 2/3 agp just to be cautious. I hope it really is working at 1/3 and not just telling me it is... How do I check on this. Because if it is not at 1/3 and really running at 1/2 then I might be killing my Hard drive. THanks

Jared