As has been said 100x the Mark V is NOT the Silver Centurion suit, it shares absolutely nothing with the armor except a color scheme. If they call it the Silver Centurion in the film I'll be the first to post an apology but until then goddamnit people just call it the Mark V.
The mark V other than color seems to be totally the opposite of the Silver Centurion armor. Being a much lighter more portable armor instead of a bigger heavier armor.
You have to be careful though because people refer to an armor that is red/silver as Silver Centurion so you'll find the Hasbro figure that was the Extremis painted red/silver. The first film's conceptual which is the Mark III painted. The fan conceptuals from a contest not too far back. Sometimes GIS can mislead more than inform.