Having read through this thread:
--Server boards do not SLI, but you can run more than one GPU in non-SLI which won't help as much. The SR2 WILL SLI (but will require a more specific case as it's not a normal size).
--Server boards (i.e. dual socket motherboards) can run a normal i7 - but only 1. If you ever want to add a second CPU you'd have to REPLACE the i7 with a pair of Xeons. Interestingly though, dual-socket boards will allow you to run only one CPU, so you can buy the board to run two and only populate one socket now (with a Xeon processor so you're not throwing it out later), and buy another CPU later, but they have to be VERY similar (for all intents and purposes they need to be the exact same chip).
--For an x58 rig, make sure you're RAM is in multiples of three, if you're looking at Sandy Bridge it's dual-channel only. x58 is currently still the best for multi-threaded applications and will retain that title until Q3 this year when socket 2011 is coming out. Socket 2011 is going to launch with 6 and 8 core processors (multi threading to 12/16 cores) and utilize quad-channel RAM.
--DO NOT buy a 590, they are poor reliability due to a design flaw.
--DO NOT buy ATI because some of the programs you listed specifically run much better on NVIDIA GPUs.
--Ignoring price, a single Quadro GPU WILL outperform a single GeForce GPU in some of those applications, but at a much higher cost. SLI'd 580's are going to give you the best performance for your money (the two 580's outperform a single comparably priced quadro).
--DO NOT rely on a single MLC SSD for your OS drive (and I'm assuming you're porting the 4TB from your old computer). Use a RAID 5 of smaller drives to get the same storage, better performance and much better reliability.
Parts I'd recommend:
--For the boot drive: three of these in a RAID5 using the motherboard's onboard RAID controller: http://www.newegg.com/Product/Produc...82E16820227529
this will give better performance, the same total storage as the single drive you linked, and IF/WHEN you have a drive fail (MLC SSDs fail at a higher rate than traditional HDDs do), you can actually keep on working, just replace the failed drive in the array and regain redundancy in case of another drive failure in the future. Run them in SATA2 ports on the board as they will saturate a SATA2 port perfectly and RAIDs on SATA3 ports are still buggy.
--For the motherboard:
For a normal i7 build: http://www.newegg.com/Product/Produc...82E16813188065
For a dual-socket build: http://www.newegg.com/Product/Produc...-070-_-Product
The PSU for the SR-2 if you go this route: http://www.newegg.com/Product/Produc...-003-_-Product
--CPUs to use:
Xeon (one or two for the SR2): http://www.newegg.com/Product/Produc...82E16819117242 this is a 6-core, 12-thread CPU and you can run either one or two in the SR2 board, but there is no point to buying this CPU if you're not doing a dual-socket motherboard.
--Heat Sink Fan:
Single Socket: get the Corsair H50 or H70 they are very effective and pretty silent. They come with everything you need and the thermal compound that comes on it is really high quality.
Dual Socket: you'll want to stick with air cooling in general because it's hard to get two H50's to mount in one case easily and nicely without having to mod the case. I'll point you here: http://www.frostytech.com/top5heatsinks.cfm they didn't include socket 1366 in their reviews but if you look up the individual heat sinks a lot of those are compatible with them. I point you here so you can look at real testing data instead of people's anecdotal "I bought the biggest cooler I could find and strapped four 130cfm 38mm fans to it and it's teh bestzors, you should buy it" This is a workstation build, it should be built using practical hardware.
--Graphics Card: Although I'm a big fan of EVGA cards for their lifetime warranty and good support, I'd recommend http://www.newegg.com/Product/Produc...82E16814127579
as an alternative. It will run MUCH cooler than the EVGA card does, but it's *only* a 3 year warranty. I won't say that one is preferable to the other, just giving you something to think about here. Longer warranty vs running cooler and quieter. And MSI support is very helpful also.
--Memory: I would recommend doing 3x4GB sticks of RAM, then it's easier/cheaper to add more later as needed. The RAM you linked is again aimed at overclockers, you can save yourself a lot of money and buy something more practical.
Single Socket: http://www.newegg.com/Product/Produc...82E16820231408 instead. Higher speed at stock settings, lifetime warranty (just like Corsair) and good support. I'm a dedicated G.Skill user because they are consistently high quality, high performance and low cost.
Dual Socket: http://www.newegg.com/Product/Produc...82E16820220423 still a 3x4GB kit, but has ECC for increased reliability for a workstation/dual-cpu environment. Yes this is a little slower than normal RAM, but MUCH more reliable in operation.
If I missed anything or you have any other specific questions, I'll be glad to help. You have to be careful who you take advice from on overclocking forums because a lot of people aren't used to building a workstation because it is not the same as building a gaming PC.