I've got a Mac Pro that I use for gaming (Windows) and design (Mac). I've got 4 gigs of RAM in it now, but I'm wondering if the inclusion of another 4 gigs would be a useful addition. Does anyone know how well Windows 7 would manage this extra RAM? Would I see a speed boost for loading gamings/booting/multi-tasking? Also, I know I'd have to use the 64bit version would this be problematic running certain games if they aren't optimised for 64bit? On the mac side, the work I do isn't very RAM intensive but would in notice a general boost?