The Intel iMac is a faster machine than the iMac G5, but if software isn't designed for the Intel iMac, the software will go slower. Right now, iLife and a few other apps are designed for the Intel iMac, but most (like Photoshop) aren't yet. So basically, if you get an iMac G5, most software will go faster now. If you buy an Intel iMac, most software will go slower now, but a lot faster after it's all switched over.