So, the biggest thing you do at home is gaming?
Immediate fixes for that involve 1 more gb of ram, a better video card, and a faster hard drive.
Your CPU/MB/RAM combo, while without the larger caches, more efficient processing, and incrementally-faster FSB's, is more than adequate for playing.
While I have all you 1334 peeps here, does anyone have a Molex-to-PCI-E power cable adapter? Looks like this: