Sorry if this is been asked before. I'm currently using an old Oder generation Mac Pro my usage ranges from graphic design and HD video/audio authoring to gaming with Bootcamp Here's a quick overview of my system: Mac Pro (Early 2008) Processor: 2 x 2.8Ghz quad-cores (64-bit) Storage: 4.5TB (500GB, 1TB, 3TB) Optical Media: MCE Blu-Ray + DVD+/-RW (upper drive), generic DVD-RAM (lower drive)* Memory: 4GB (2x2GB) DDR2 800Mhz ECC FB-RAM Graphics: ATI Radeon HD 5770 (1GB GDDR5) *soon to be upgraded to a second MCE Blu-Ray drive. OS: Mac OS X 10.6.8 and Windows 7 Professional 64-bit. My heaviest usage on the machine comes from the installed Adobe software, followed by Apple's Logic Studio and It's associated programs, other program's range in usage but most are negligible. Bootcamp usage is tailored to mid to high end gaming, I'm not entirely sure of what is the best memory configuration for Windows 7 though. I'm looking at five options for RAM. 1. 12GB (6x2GB)* for $490.98UD 2. 16GB (8x2GB) for $651.98AUD 3. 16GB (4x4GB) for $861.99AUD 4. 24GB (6x4GB)* for $1294.98AUD 5. 32GB (8x4GB) for $1723.98AUD I believe options 1 and 3 used to be the most efficient configurations, something to do with firmware? But I believe this has been fixed in an update. If there's someone who's done this before can I get some feedback on the best choice? Am I missing anything? Regards, Peter.