I have a NP530u4c, it has an intel HM76 with a 3rd gen i5 337u + intel HD4000. It also has a nVidia GT 620M which sucks so bad.
Game debate for HM76:
http://www.game-debate.com/motherboard/index.php?mot_id=2074&motherboard=Intel%20HM76
Official Page :
http://www.intel.com/content/www/us/en/chipsets/hm76-mobile-chipset-brief.html
I think it can accomodate another Graphic Card, I dont really care about warranty since its useless without a decent graphic card anyway~
Oh and no I cant really buy a new laptop :/
Game debate for HM76:
http://www.game-debate.com/motherboard/index.php?mot_id=2074&motherboard=Intel%20HM76
Official Page :
http://www.intel.com/content/www/us/en/chipsets/hm76-mobile-chipset-brief.html
I think it can accomodate another Graphic Card, I dont really care about warranty since its useless without a decent graphic card anyway~
Oh and no I cant really buy a new laptop :/