>>7718"officially", the proprietary bios might cry about it if its outdated
the latest proprietary bios will probably work (but i didn't test that), and coreboot will work fine as well
8 gigs will work fine as long as you have 2 identical sticks (2 different ones might work but don't count on it, 'identical' means same speed and size btw, not brand), they work as PC3-8500, and are 2Rx8. GM45 has 4 ranks total, 2 per physical DIMM slot, which means it has 2x2 ranks. each rank takes 2 gigs max. so 8 will work as long as you have 2Rx8 DIMMs.