Right now I have a PC desktop that runs at 1.8 Ghz, with 768 MB of RAM. I'm looking into getting the 12" Powerbook Superdrive model with the RAM upgraded to 512 MB to compliment/replace my PC. However I'm wondering about its 1 Ghz speed. I read somewhere before that an 800 Mhz Mac was able to outpace a 1.5 Ghz PC, but is this the case in this instance - would the Powerbook feel slower, faster or about the same as my PC (I would be occassionally using Garageband, iMovie and iDVD but not enough to need the G5 I don't think)?