P5 is slow but just workable at G4 733 Mhz. I wouldn't try it at 233 except for very simple stuff. I havn't tried rendering anything at 1.4 Ghz, yet (just got the processor upgrade) but going up from 733 was a huge improvement. P4 runs acceptably on a G4350, and even on a G3 at 400, or so. I'd recommend you use the money to buy a processor upgrade. :o]