It has crossed my mind about the usage of other packages like Houdini, I tend to sit on one side of the fence on on the fence sometimes until I have better info or understanding of what I am looking at.
I now have a better understanding thank to you lot.
As per SAS drives I have already found a couple of motherboards with built in SCSI/SAS controllers, and if I go for one without a controller I'll most likely go for an Adaptec or a Promise card.
But that said any other suggestions would nice.
With that said I like the idea of a couple of SAS drives for working with, and larger slower SATA RAID for storage.
On the CPU front I think it is now between Xeon & Opteron (2nd Gen).
I've used an Xeon powered MacPro and HP server before so roughly know what I am going to get. But I don't want to discount the Opteron which could prove to be the better option, on price per performance level.
I have no experience of the AMD chip so I don't know what to expect from it.
I will however appreciate any views or comments on the Opteron.
By the way I am thinking of a dual processor machine.
As far as the GeForce cards modded to a Quadro, I understand the warranty issues, it just sounded like a nice idea, worth thought.
When I said the mod is done on windows I forgot I could probably do it on Linux too.
And just for the Architect I got the gist... just
Anyway, again thanks for the help guys