Eh its all RAM.

Corsair isnt a bad company and makes pretty decent RAM, but I have had a stick of Corsair in he past (~5years) that failed for no apparent reason on my part. But I think Im an oddity. Dont hear about too many such problems.

Course stupid me didn't know they had a lifetime warranty. Figures.

Honestly, I would go with the Corsair considering the price difference. Can't offer any advice on the install though. Have never really tinkered much with lappys.

Sure it will play nice with the existing ram though? Even if it doesn't you will have more than you started with I guess.