I am interested in buying the 15" notebook with the third gen Intel chips for use as a general laptop for college work + gaming system (i.e., the G55VW series).

I see on the ASUS web site the G55VW-DS71, but on Amazon, Fry's and elsewhere I see different suffixes, for example, G55VW-ES71, -RS71, -AS71, -NS.

What do the different suffixes AS71, RS71, DS71, ES71, NS specify?