Well, I'm running 50% over spec on my current machine at the moment.
But I'm no expert on the subject.
My FSB is 200 on a 133 spec card. So I'm happy with that effort. (it's a bit noisy though, hence my no noise plan!)
I do intend to push the limit on this new machine as well. Slowly increasing the speed to as much as I can get out of it. It does take some planning, so the partslist on my gallery may change before I actually build it.
I do have a buddy that is very proficient on over clocking, I'll be running the setup by him as a last check before firing it up!
The PC project:
The new Asus card can get the memory up to ca 1140mhz (theoretically)
http://www.pcstats.com/articleview.cfm?articleid=2097&page=15 (some info on the cpu...)
If you really wanna over clock a core duo CPU, the Abit AW9D-MAX is THE board to go for!
It will run a E6600 at 3.8Ghz like a breeze! Use G.Skill HZ memory and you've got yourself a quick machine! A game monster...
Now overclocking is really all about getting a really strong powersupply.
I'm gonna go with a custom built one here in Norway, it is built/modded by a firm called Microplex.
They build a series called MIST. Very very good, and very very pricey (300$ ++)! But no noise! So there you have it!
Getting you PC to be quick is all about homework.
I expect to use 2- 3 months now reading forums and tests and asking questions all over before I
finally start purchasing components, then I have the plan ready and there will be no problems.
It will be an expensive build this. I don't want to waste my money. And I dont want ANY noise!
When I am done, I will post a very detailed step by step story on the computer

- Hardware, bios, windows core/services, programs, security, installed programmes, boot enhancements, the lot!
Imperial