If I'm wanting 4GB of memory, would it be better to go for 4x1GB sticks? Or 2x2GB sticks?

Seen these on special offer until Thursday
http://www.overclockers.co.uk/showpr...odid=MY-096-OC

Would these work well? If not, what 1GB modules do you recommend to run 4 of?

This will be with a Q6600 G0