I have been through 4 pairs of DDR2 800 Ballistix Tracers... Guess what, each and EVERY module is dead, and I can't even do an RMA where I am just outside of the RMA period for these sticks... Grr.... Guess that is ANOTHER "High Quality/High Performance" company that I won't buy from again... It is getting to the point where I can't stand some of the manufactures anymore....