Have I understood the basics of overclocking the 865 chipset?

[smilingcrow]

I'm new to P4 overclocking and I want to make sure I've understood what I'm attempting to do, before I order some components. I'm looking at a 2.8C & Asus P4P800-E Deluxe.
Are my following deductions of overclocking the 865 chipset correct?

1. FSB can be set between 100 to 250+, often in 1 MHz increments up to 200 MHz and then often in slightly larger increments.

2. AGP and PCI busses can be locked at 66/33 or higher if required. i.e. they are completely independent of FSB or memory speed.

3. The thing I'm definitely not clear about is how the Memory settings work! When I set the memory clock, is it an absolute value or is it a ratio of the FSB?
i.e. in the Asus BIOS you can choose between 266 and 533 or Auto. So if my FSB is 250 and I set my RAM to 400 will the RAM setting be 400 or 250/200 * 400 = 500?

I know synchronous RAM is best for performance, but I'm not yet sure if it's worth me paying the premium for PC4000 over PC3200!
I don't want to spend the extra on PC4000 and find that I can't run the CPU and RAM synchronously at high FSB settings. i.e. The CPU can't handle a FSB of 250, so I'm forced to use say 240 FSB and the RAM then will then either be set to PC3200 (asynchronous) or PC3840 (synchronous). Help!

Love

Smiling Crow

 

[Dcasole]

smilingcrow, Here are some answers to your questions

#1 - your are correct
#2- You are correct again . In order to overclock you must be able to lock down the PCI/AGP bus to 66/33 or a value that is close. (my MSI board will only allow me to go to 67/34 inless I enable SATA)
#3 - this is how you set the memory dividers on my board but I am not sure of others

I hope this helps
Dave