No, not really, unless you've got apps that can utilize 2 or more cores, like video editing/encoding, photoshop etc. Then another 1gb of ram will help too. If you multitask an awfull lot, or want to play games when ripping mp3's, then a dualcore can help too. For everyday usage, it's not going to help to much, and in games, it depends on the games you play, but most games can't use more then 1 core.