I've been interested in a dual cpu build for a while now and I think I've found the sweet spot for me, where performance meets the wallet and that's the x5650 area. I think a few active forum users have these in use. I'm getting near the point of buying and did as much research as I could think of. So in my mobo search it needed to be dual1366 and i wanted to have at least one pcie2.0+ slot, this is the best thing I came up with: http://www.ebay.com/itm/191310694068 and the specs http://www.supermicro.com/products/m...00/X8DTi-F.cfm

That's a package, they also sell it broke down all the way to the mobo. They also sell it with cpus but i think I'll buy them separately for the savings. I asked the seller about the PSU it comes with, as I didn't think it had dual 8pin psu connectors but he tells me it does and has been tested with it. My big concern is unforeseen costs, it looks like ram isn't cheap for registered ecc, thats what I want right? Also if I need a lot, or else whats the point of 24 threads? I was thinking at least 24gbs (6x4gb), pretty sure the mobo manual said optimum is 3dimm + 3 dimm or 6 + 6 (triple channel?)?

Right now my unforeseen costs are RAM, ~150$?
HDD: i might have something here. (SAS = scsi on sata connector?)
GPU: i have a pcie2.0 gtx 560 that needs a home or this 270x
Case: plywood if i have too
OS: linux
Peripherals: have monitor,kb, mouse I don't think it has onboard audio.

Any experience or input would be greatly appreciated.