OCZ DDR PC-3500 Gold Gamer eXtreme
 

One of the features I really like is the EVP, that's basically OCZ saying
"We know you are going to tweak this RAM to get the best performance
possible, and that's OK with us." Features like this show how enthusiasts,
gamers etc. have shaped the industry. It wasn't to long ago that doing
things like modifying voltage etc would void your warranty. These days
manufacturers are providing end users with the tools needed to overclock
and tweak their hardware without having to worry about voiding the
warranty.

http://www.viperlair.com/reviews/mem.../DDR1/gex3500/