Hey, all - I tried searching the forums, but didn't have much luck. I'm struggling to figure out how much and what kind of RAM I can put into my machine and was hoping for some help. I have a Mac Pro: Mid 2010 Processor 2 x 2.66 GHz 6-Core Intel Xeon Memory 6 GB 1333 MHz DDR3 ECC Graphics ATI Radeon HD 5770 1024 MB Software Mac OS X Lion 10.7.4 (11E53) Lots of people have been telling me to use Crucial.com to figure out how much memory and what kind to get. However, Crucial keeps telling me I have 4 memory slots. My System Report keeps telling me I have 8 slots. Apple's website says that 8 slots should be expandable up to 64GB of RAM. I'd love to max it out to 64GB, but I don't know what kind I can get. I've been cautioned against Kingston, but that's about all I know. Can anyone help? I'm desperate right now.