Quote Originally Posted by sierra_bound
Depends on how you define stable. I can run SuperPi 1M at 450FSB with air cooling. 1M is more of a speed than stability test. I can run 32M at around 440FSB on air. May be able to go a little higher with sub-zero cooling. In order to get really high FSB, you need a lot of MCH (northbridge) voltage. The Asus board only goes up to 1.65v in BIOS. A few people have modded the board so they can run Vmch at 1.9v. That will help a lot.

I'm not using the board for everyday chores. Mine is strictly an overclock-and-have-fun board.

I used SetFSB last night to be able to run at 450. It's probably not going to go any higher than that with 9X multiplier and air cooling. That has more to do with the CPU than the motherboard. With better cooling, I might go higher. I have not tried dropping the multiplier for testing yet.
That's what i'm asking for.It would be nice to see what's your max fsb.The only way to find it is to drop your multi as you said.All the mainboards have options of max 500+fsb till now,but it would be useful for us(who looks for buying conroe) to know which is the max stable one(even with the 1.6v that asus has max for chipset).