How is an HP Z220 CMT Workstation different from an HP Z220 SFF Workstation?

A.
provides a rugged design that passes Military Standard 810G testing

B.
has performance unmatched in previous HP workstations

C.
delivers energy efficiency, expandability, and professional-class technologies in a form factor
that is just slightly larger

D.
provides a nearly silent industrial designed workstation that fits into confined spaces

Explanation:
Reference:http://www.hp.com/unitedstates/campaigns/workstations/z220_features.html#.UGoqa6T9FOg