TBH, I actually think it's quite pointless getting 1066MHz RAM, because to get 2GB from a good brand, it's going to set you back about £100. And you cannot run PC28500 RAM with a 1:1 ratio unless you a really really high FSB. Think about it, you can buy a 2GB set of PC2 6400 CL4 (nice low latency) from Corsair , which is what I have, and run it in a 1:1 ratio (a 1:1 ratio is always ideal if possible) Oh and if you really have to have it at 1066MHz, the corsair 800MHz memory will overclock that far anyway. 2GB of this stuff costs £40 so you can get as much as your Mobo can hold for your budget. Anyone agree with me?