We are an architectural firm and wish to use Linux based platform on our desktops. The Softwares used would be Draftsight, 3dmax, sketchup, tally & office. Which platform is best suited for our needs and what would be the ideal system requirements for the same. Thanks & regards..
First off, some of the software you list doesn't have Linux ports. Draftsight has beta binaries released for Ubuntu and Fedora. Microsoft Office isn't supported on Linux and you'd probably be looking at switching to something like Libreoffice. Tally, Google Sketchup & 3ds Max doesn't have native ports. You can probably run them with Wine but smooth operation isn't guaranteed.
Secondly, I couldn't possibly tell you what distribution you'd want to use, much less the ideal system requirements. If all your needs are the software you mentioned, then we have a problem since most aren't supported on Linux. This means that if you do get them running with Wine, the system requirements mentioned on the software's websites might differ from what actually will be needed.