Which is better?

[Zulu]

Sorry people, I know nothing about RAM. I know one number is bigger than the other but that doesn't account for much.

http://www.overclockers.co.uk/showproduct.php?prodid=MY-000-AR

http://www.overclockers.co.uk/showproduct.php?prodid=MY-012-AD

How much better is this?

http://www.overclockers.co.uk/showproduct.php?prodid=MY-017-AD

 

[Something Else]

whats your current pc?