Well first, I think you got too much money into the video cards... Look at this CPU chart, http://cpubenchmark.net/high_end_cpus.html , it will show that the CPU you got is beaten out by several non server CPUs at better prices.
What are you going to use it for? I know you said video editing, but unless your doing live video I feel like you could give up a little and just save some money.
Tell me what you are going to be doing with it, and I will sudjest a more friendly build.
I plan to be editing large volumes of HD Footage and moving into the future 2K footage, which doesn't seem like a big deal until you get to the render process. Typically I need to do a minimum two pass render but often with colour grading and VFX it can run up to a four pass render, so I am willing to spend more money if it saves me time there.
I am aware that there is a big debate about the i7 vs Xeon capability, and the ivy bridge vs sandy bridge - some of which I admit is over my head - but if history is anything to go buy, Xeons provide stability under stress - again large volumes of footage, rendering, compositing, photoshoping.
Also there are times when I need to have multiple projects open at once, which impacts upon performance.
I have been using high-end GTX cards for a number of years now and the more I develop my skills the more they are letting me down.
I have looked into the ATI Cards (The FirePro's) and they get negative reviews from the NLE community across the board - I was considering a matrox or maybe a black magic (like a decklink or something) but then I thought that I would be better off going a Quadro now and then expanding to a MOTU HDX-SDi external card.
From there, depending on the need of course and the money, I would start to build a render farm aiming for a 4U rack set up - but this is speculation at this point.
The important thing is power under the finger tips so that I don't have 20 hour renders that fail at 90%.
[I figure that if the comp is capable of all this then it should breeze through digital audio recording ]
Also who knows, since you have mentioned that this workstation will be capable of medical graphs there could be a moonlighting oppertunity jks.
Well it just so happens that the i7's were made for just this... They excel when it comes to video codeing, more than half of their design was based around this. If your sticking with Intel, I would sudjest going with Nvidia Video Cards. http://www.tigerdirect.com/applications/SearchTools/ite... http://www.tigerdirect.com/applications/SearchTools/ite...
This is a good pair... But honestly I wouldnt be into server parts. I would just get high end desktop parts and roll with it... I still believe that only people that should be using server parts is businesses... And they dont typically build their own.
Regardless, I honestly dont see the reason to get the CPU tho, just get a regulard desktop CPU and a normal video card.