Sold my old PowerPC G5 tower Xmas 2011 because was well, on it's last leg and have missed it ever since. Looking at a refurbished on of these http://www.everymac.com/systems/apple/mac_pro/specs/mac-pro-quad-2.66-specs.html Comes with 4GB ram and a 512MB ATI X1800, which I guess was an upgrade? Basically, been a while since worked on MAC's and old one was a PowerPC, so hoping to avoid surprises with the newer Intels. Memory wise, PC5300 DDR2... will it only work with PC5300? I'd want eventually 8GB total, though I read in passing somewhere that the ram performed better installed in 3's not 2's? Video card, any Apple PCI-e (x16) card will work? Would be looking at 1GB GDDR5. I have a PC now, Win7x64 running a Core2Duo 2.4GB, 4GB ram and an ATI HD5670 1GB card... it's currently my main system and runs a media server at the same time so, I know the MAC isn't leaps and bounds faster but, 2x2.66Ghz so should be a bit better. Retire this PC over as a devoted media server. Also... any dual boot issues? Any advice would be great. Between jobs, use to be a designer so, looking to get that going again, but can't afford more than the $450 being asked for the refurb. Thanks.