Right now I won't suggest to go for NP550. Wait for sometime.
Update: Thank you so much @Sam. Well I went through almost whole review, the throttling is not because of 90W charger as they didn't mention anything related to it. The throttling was because Samsung didn't designed it better. Though the throttling could be reduced with a BIOS update(if Samsung release a decent BIOS update). Temps are almost similar to what TDF members are getting. And they have clearly mentioned that with the age the dust will accumulate inside laptop which will increase the temp and eventually the occurrence of throttling.
Still I will recommend to only people who don't game on high setting(forget ultra) and that too not for long hours. Conclusion,this is not a gaming laptop,we all know already,but still if we can't even enjoy occasional gaming then what the hell. This laptop does have a good screen, keyboard layout and not much heavy(saying exact word from review and some personal opinion) and the price is good compare to others, can be said as VFM(still) for people who are not into high/ultra gaming. I am still waiting for nVidia drivers then I will have a clear picture.
If anyone don't want to go through whole review and just want info on throttling then go to 'thermal and acoustic page'.
AnandTech - Samsung Series 7 NP700Z7C Review
Personally I will not recommend now cause most of us want their 50k/60k laptop to run for atleast 3yrs without much of a problem and it doesn't seem so in this laptop.
@Sam: the laptop reviewed on anandtech have GT650 M DDR5 with a base clock of 745MHz . We all have DDR3 with base clock 405MHz, so is it possible that samsung has clocked it down or it is like that in DDR3 version? Anyway we are getting around 840MHz as a max. So any problem here?
EDIT: guys please, if discussion is big then don't do it here, take it to NP550 thread, so that i can keep up with you guys.