Ive been out of the scene for a while, I've got some money burning a hole in my pocket. My case is 9 years old, my system is 4 years old. and I'm thinking about water cooling.

With about $450 what should i do? I put this here because my real question is whats hot in the amd camp right now? Last time i built a system it was an opteron, So whats todays opteron? My current system is in the sig.

Thanks for any direction or advice.