Mac OSX Snow Leopard in General Chit Chat Posted August 30, 2009 The older Macbooks are only 32-bit aren't they? The Core Duo ones I mean. Cos that is what my one is so I'm assuming I wont see much of an improvement in speed. I'm thinking of waiting as I would like to get a new laptop at the start of next year so have held off getting the iLife update, and might save this as well. I've read several reviews as well as you guys comments, and it definitely sounds worth upgrading to. My only concern is how much it would really benefit my older Macbook.