How much weight did Apple shave off, and how did they do it?

[WardC]

So,

How much weight was lost in these new MacBook Pro models over the 2010 models, and how did Apple reduce the weight? Are they actually thinner, and did Apple do something to the case designs? Are they actually physically different than the 2010 models?

 

[jiE]

Same weight, same dimensions - same external.

 

[Sneakz]

Actually, the 15" gained weight. 5.5 to 5.6 pounds.

 

[melterx12]

Actually, the 15" gained weight. 5.5 to 5.6 pounds.

lol