over-reaching FSB limit

[Aalim]

Hello to all,
I have to buy a motherboard that has no great pretensions to overclock.
I feel particularly oriented towards the Asus p5ql-old and the chipset p43 but I saw on some site that this card has a limit of 420 FSB.
What can I bring the procedure to the frequency at the 420 FSB or the card to work near the "threshold" is likely to deteriorate and touches me throw it all away?

[Reginald]

the p43 is not as old as chipsets. P45 is without a two-pci-express lines,Have you take that card?

[Aalim]

Now think of the Asus p5ql-and why has the characteristics it needs, and if we could bring the FSB to 420/430 without the Motherboard has reached the limit would be even more happy because I could have the procedure to 4 Ghz.
Replacement demand:
What can I bring the procedure to the frequency at the 420 FSB or the card to work near the "threshold" is likely to deteriorate and touches me throw it all away?