Good morning, I'm currently have a late 2009 iMac (Core i7 860 Nehalem, 6GB RAM, SSD) and am looking at upgrades. I'm not particularly interested in another iMac - the built-in screen isn't my thing, and I'd like to have a machine with the prospect of multiple internal hard drives and potentially enough RAM for a RAM drive. The only really performance-limited things I do are Lightroom and occasionally Photoshop. My idea is to find the least expensive dual socket 1366 Mac Pro model, and then upgrade the CPUs, and other things. My understanding is that under the hood, the machines are essentially the same in terms of hardware - they just come with different processors? Or at least, they are identical once you use the NetKas firmware updater. Also, I have access to an HP workstation with dual Xeon X5677s. I was hoping I might be able to use its CPUs in the Mac Pro. Since I would be upgrading the CPUs in any case, I'm leaning toward the 2009 dual 2.26GHZ model as the least expensive option. I'd be interested in your thoughts though. I'd also like to at some stage add USB 3.0 and SATA III with hardware RAID, via PCI-E cards. The alternative would be to build a Haswell Hackintosh, but I'm assuming that even though the dual socket setup would be using older chips and motherboard, it should be faster than a single socket Haswell kit (e.g. Core i7 4770K). Thanks!