fsb settings

[nicco eneidi]

whats the difference between the fsb setting of
140mhz (4:3:1)
140 (4:4:1)
?
i know that the first number 4 is the divisor for the pci devices but what do the second number changes mean?
The 4 4 1 seems to be more stable than the 4 3 1 though.

 

[nicco eneidi]

im in need of someone answering my physco babble
hehe

 

[nicco eneidi]

cmon someone reply to this phsyco bablle of mine please?

 

[markedmundb]

Just guessing...

the 1st might be the ISA divisor (if your board has ISA Slots) the second (if the first is your ISA divider) might be your PCI divider...

... Or if not, it might be you AGP divider...

As I said, just guessing!

 

[DaveB]

Here's a copy of my answer from the Intel CPU forum.

The ratio you're talking about is the FSB:SDRAMCI ratio. At 4:4:1, the FSB equals the SDRAM frequency and the PCI ratio is 1/4.

At 4:3:1, the SDRAM divider is 3/4 if the FSB and the PCI ratio is 1/4 of the FSB. So at 4:3:1, your FSB is 140 MHz, your SDRAM is running at 105 MHz, and the PCI is at 35 MHz. Dunno how that could be less stable. It would be slower than running at 4:4:1 where the SDRAM runs at the FSB rate of 140 MHz.