I've got a 2008 Mac Pro (3,1) that I bought used from a buddy of mine about 5 years ago. I'm moderately savvy with computer hardware, so I've made some upgrades to keep it alive and boost performance (like upgrading it from a quad core to an 8-core, using SSD drives on the PCI-E bus, etc...) and it still holds its own. Recently it died unexpectedly- the fan would turn on and the power light would blink at a steady pace, but no "bong" noise and no video output. I read that issues like this were usually RAM-related, I scoped out the daughterboards that the RAM seats in. When I powered on, all of the LED warning indicators for the RAM slots would flash once and then remain dead; this seemed like what they normally do. So I started removing sticks 1 at a time and found that one of my 2GB sticks was causing the problem. Since I have to have the RAM installed in matched pairs on this machine, I don't want to drop down to 8GB of RAM when my kit in Superior Drummer takes up 5 of them. So I'm shopping around for RAM to add in another 16GB. It looks like I can get the right stuff across a range of prices... everything from $76 to $360 for 16GB. All from manufacturers I've never head of: Dataram, Nemix Ram, Komputerbay, Pfetcher, Memgate, etc... And naturally, there's a shortage of reviews on many of these sources. It's probably a long shot, but do you guys have any advice on shopping in this wilderness of unknown manufacturers?