Overclocking question?

I just built a rig with an E8500 on an Asus X48 board and I run the E8500 at 3.8. I'm gonna clock it higher after the Arctic Silver 5 sets up. That 1333 rating just means the board supports cpus with a default FSB of 1333. Depends on the board. Some boards won't let you overclock at all so you would be stuck as 1333FSB. I'm using a Rampage Formula, one of the best overclocking boards made and I'm running the cpu at 9.5X400 with a 1600FSB. Make sure you use a board that you can clock the ram and FSB separately because, if you can't, you're gonna be bumping the ram speed up when you bump the cpu FSB up and the ram will not be able to keep up the 8500. E8500s overclock easily to 4 Ghz if you know what you're doing and run the right hardware.