It's still at the lower end of the current generation of NB's.
Gigabyte has a nice little 15 Inch unit that can take either a i3, i5 or i7 CPU and 8 GIG of RAM and it works quite well even if you load it with Windows. It's blistering when loaded with a 64 Bit Nix Distribution a i7 CPU and 8 GIG of RAM.
With Samsung only fitting 1 X 4 GIG Memory Module I would be looking at reduced performance as it's locking the unit into Single Chanel Mode and only supplying Data at 50% of the FSB of the CPU. Hardly a good thing unless Samsung don't expect any people to use it as supplied.

Col