I second the P4P800, very sweet board. Out of the box the thing is solid and fast, and you can pretty much play with it endlessly. I'm not sure Sandra scores mean much, but going from a 2.4 533, to a 2.4 800 is a difference I could see in opening apps. Not being much of a gamer, I really appreciate the speed I see in the OS, translates to everyday kind of stuff. I'm still playing around with all the bios settings, but basically the AI overclocking features seem to work pretty well. No special cooling or anything, and no problem at all using AI to go up 20% to almost 2.9, and moving over to manual no problem at 3.0, all with no odd OS action. The P4P800 Deluxe also has the Intel raid function, which has worked really well for me with 2 Seagate 80gig SATA drives. It's a very impressive board all the way around, I'm glad I chose it.