What does the HP Z420 offer to improve performance and increase efficiency?

A.
support for Window Vista

B.
Quick Patharchitecture

C.
ECC memory

D.
support for the Linux OS

Explanation:
Reference:http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c032707
29&lang=en&cc=nl&taskId=135&contentType=SupportFAQ&prodSeriesId=5225041&prodTypeId=
12454(first bulleted point, third paragraph)