OCZ XTC Cooler Rev 2 Memory Cooler Review
 

This product has clearly been created for enthusiasts, as it is rare that any “normal” user will require extra cooling to their rams, I would therefore expect it to reduce temperatures quite substantially, so as to allow extra voltage to be put through those DDR1/2/3 circuits.
: http://www.xtremecomputing.co.uk/review.php?id=492