I have just recently bought a 8-Core 2.26 Mac Pro and so far I'm very pleased with it. It performs better than my late 2011 17" MBP that I owned for 4 months, which I recently managed to sell with profit lol. Anyway, the prices of the Xeon X56xx processors are fairly cheap these days, so I'm thinking about buying two 2.93GHz (X5670 I think). I don't really need the performance. I'm an enthusiast who just wants it for the heck of it =) However, I don't really need the upgrade now, but I fear it will become more expensive in the future. However, isn't the ultimate upgrade for the 4,1 and 5,1 cMPs dual W5990? These CPUs are actually 130W and intended for the single CPU tray system while the X56xx are 95W and intended for Dual CPU, aren't they? Can anyone confirm this please? I have already ordered the AC Wifi + BT 4.0 kit and also PCI-E SSD solution, so I guess I don't have to worry about it. I thought my next big upgrade would be to upgrade to EVGA GTX 970 ACX 2.0 Superclocked, which I hope I would hook up to two 27" LED cinema displays in the future if I get them cheap. Is that even possible? I couldn't find any adapter to plug mini display port cable which would plug into DVI on the graphics card. I currently have the 24" LED Cinema Display So, any advice on my upgrade questions please? I hope I don't have to worry about the CPU prices increasing. Thanks!