2.4b and 865pe board

[o1die]

I've heard that you can't run pc3200 memory at 400 speed with a 533 cpu. Is this true, or are the proper ratios available using the 533 setting? Does the abit is7 offer memory ratios such as 4:5 for running memory faster than the cpu setting? Thanks to all who reply.

 

[Sunny129]

unfortunately this is true for the IS7. in order to run PC3200 at its default 400mhz while using a P4B (533mhz fsb CPU), you would need a 2:3 divider. and the only dividers offered when the N/B strap is set to 533fsb are 1:1 and 4:5. while i don't have the most recent BIOS, no support has been added for a 2:3 divider for a P4B chip since. well at least there's a 4:5 divider, which is better than nothing...

 

[o1die]

Guess I'll have to run with 4:5 and 166 fsb for the cpu. I was trying to find the asus p4s800D with sis 655fx chipset, but the board is special order only.

 

[Sunny129]

you're better off staying with an 865 or 875 chipset for the P4 anyways.