Hi there! My dad just bought me a MacPro 3,1 with 2x Quad Core Cpus (2.8GHz). This is the early 2008 model. I currently have a desktop with the following specs: i7 930 (2.8ghz quad core) 6gb RAM Sapphire R9 280x Vapor-X Edition Now here's the thing. I want to swap my 280x into the MacPro but of course, Apple only has 6 pin connectors and my card requires two 8 pin connections. I read a lot about this topic in this forum, and it seems as though it is very risky to use a 6pin to 8pin converter. My card is on the high side of power draw (I heard it can reach 460W but I don't think that is accurate... it's rated at 250W TDP). I really don't want to modify the case in anyway. Should I just keep my current desktop or is there a way to throw in my card into the mac? I'd much rather have two quad core processors than one. Also, I do not want to spend too much money. I've already burnt about $600 upgrading my previous desktop (I had to buy a 1000w PSU because I was planning on getting a second 280x). Thanks for your help!