Hi all, (TLDR: What's the best option for getting 2x7950s in a cMP safely and with as little added noise as poss?) I'm in the market for a cMP 2010-2012. One of the big reasons is the opportunity to put dual 7950s in it, and I don't want to risk doing it on the stock PSU so I'm going to get a secondary one for the drivebay. I'm also looking into 7970s, as in whether it's possible and worth it. I've read some really great walkthroughs by HappyMac314 and OrangeSVTguy, and am planning to run the power rails off the stock PSU to get a neat and tidy solution. My research has so far tended to lead me to Seasonic... anyway onto the questions! What PSU would you recommend, with lowest noise being the goal? How deep can the PSU be? The 400 and 500w Seasonic drives look long, but I've read that they run fanless until 250w. Does the 'Active PFC' part mean that the fans are controlled by the draw from the PSU rather than being on all the time? I don't use an optical drive. Is putting a 2U PSU into the cMP an option, in case I can find something quieter in that format? Is 250w enough for a 7950? Specs wise yes, but is it recommended I have more redundant power? Is it possible to run dual 7970s, one off the stock PSU and one off a secondary PSU, and if so is it worth it over the 7950? Do I need to use a particular model of 7950 (I'm looking at the reference cards)? If not, do I need the pair to be the same model? Thanks in advance for any advice anyone can give - I'm really looking forward to getting set up!