Finally after much experimentation got the thing to work stable!!. EVGA mainboard and graphics. Crysis runs at playable rates no crashes. Mass Effect still runs like a dog in the citadel. Much deliberation as to its stability and whether or not it does work. For those who are considering it does, not the easiest of builds. Im not really one that posts, usually just a reader/researcher but this was a challenge!
Fair play to you mate, if you've got the cash and that's your bag then why not.
Thanks for the info.
Out of interest fancy doing a timedemo of crysis very high and whatever your max res is?