processor can be replaced EASILY... if you wanna upgrade the graphics card you have to buy a new computer.
Is it easy to replace a processor in a laptop? Opening the laptop would void any warranty wouldn't it?
I doubt you will be getting any decent gaming performance out of either system. In MY OPINION
, I think that the linux operating system on the second choice would be too troublesome for me on an everyday basis. Also, you only need a dedicated graphics card if you're gaming; and even so, the dedicated graphics of 8400M GS wouldn't get you passed most of the games in today's market.