why would i want to drop it to ddr2 800?It is faster, but not enough to make a noticeable difference in gaming. With Cas 5, 5-5-5-15 DDR2 1066 RAM, you don't know if you can definitely drop it to DDR2 800 4-4-4-12, as with these you know they already do that, and will hit Cas 5 5-5-5-15 when it comes to overclocking your Q6600 (if applicable)
I do have the combo already in my cart
btw i wanted to ask, XP Pro will still be able to take advantage of the CPU, just not the ram right?