I'm starting to build a second rig, and I'd like to OC my Clawhammer FX55 (130nm) but I've been using corsair DDR400, and I'm planning on faster ram. Is it true that an FX can take advantage of much faster ram, and so should I get OCZ gold DDR500? How much of an OC will I get out of a clawhammer with an XP120 and excellent airflow. What's the best way to get a decent improvement on the FXs power?