If you can find a good deal on it, get a 3400+. It runs at the same MHz as the 3700+ but just has less cache. With A64 chips, more MHz is always good. The 3400+ has been seen for under $140 brand new, so see if you can pick up a used one or a new one for around that price, then sell your old one. That should upgrade you for around $50 (difference). You probably won't notice a huge difference, but you may sometimes. Dunno, depends on what apps you run.