The P35 boards also run cooler than the 6x0i boards. Least thats what I've seen in most cases.
Sadly, Im pretty sure that the board will downclock the memory to it's standard, but you can very well still use the memory on your board just incase you want to upgrade later, although I don't reccomend this.
You can use 1066MHz RAM on an 800 board. Like everyone else has said, it will downclock to 800, but you can go in and set it to 1066. Nothing wrong with that, it'll take about 2 minutes and the RAM probably wouldn't default the voltages right anyways (so you'd have to do it in the first place). Though it is the same idea as overclocking, it's not (and won't void warranties) because you're setting it's default clock speed.
Also, if you get 1066MHz RAM and a CPU with 1066 FSB (like the early C2Ds), they will run 1:1 and be more much faster than a CPU at 1066 and RAM at 800. You could also take this idea and run with it and get 1300MHz RAM and a new C2D (or C2Q), overclock the RAM to 1333MHz and have a hell of a machine.
RIP Bucko
Going slighty OT... would a 1333MHz CPU work on a 1033MHz board?
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Okay, sweet. I'm still getting this to replace my Pentium D (which I'm putting in a PC for my bro).
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