Speed Doubler will definitely help a 5300 (which, of course, is a cousin of the 2300), although remember that it will take a meg of your RAM. It's worth it though. I think that machine requires a special memory module, which you can probably find from various online vendors. Data Memory Systems has RAM for that machine in various sizes up to 48 MB. www.datamem.com. Also OWC has the 48MB module (www.macsales.com). Ivan. ---------------- >I've got a 190cs upgraded to PowerPC (5300), Would this help it? >Also, it only has 24 mb of RAM, and I would love to max it out. Does >anybody know how much I can go up to, and what kind I need to look for? >John