Choosing laptop to game i7-3537U + gt720m OR i5-4200U + gt740m

[markids]

so im planning on buying a new laptop, im gonna use it on the university, but im also gonna game alot in it so my question is wich one should i buy?

Asus X550LB-XO085H - 599 €
- Screen15.6" HD (1366x768) LED
- CPU Intel Core i5-4200U
- RAM 4GB DDR3 1600MHz
- HDD 500GB SATA 5400rpm
- VGA GeForce GT740M 2GB DDR3

or this one

Asus X550CC-XX1150H - 655 €
- Screen 15.6" HD (1366x768) LED
- CPU Intel Core i7-3537U
- RAM 4GB DDR3 1600MHz (Exp 8GB)
- HDD 500GB SATA 5400rpm
- VGA GeForce GT720M 2GB DDR3

im also pondering about this one cause it has more ram , hdd and the processor doesnt differ much from the other i5 i posted here
specs:
Asus K56CB-XO191H - 629,90 €
- CPU Intel Core i5-3317U
- RAM 6GB DDR3
- HDD 750GB SATA 5400rpm
- VGA GeForce GT740M 2GB

thx for helping.

Edit: btw im from portugal so im buying from a portuguese store im sorry about it not beeing in english but ill post the links anyway.

 

[LummusMaximus]

well, all of them would be terrible gamers I'm sorry to say. No. 2 + 3 have bad graphics, and No. 1 isn't great either. They all also use ULV (Ultra low voltage) CPUs, meaning they're dual core, they'll generate less heat and get you better battery life, but when it comes to performance, it will not do too well. Number one has best CPU as well, though- the other two are last generation tech. If those are your options, go for laptop number one.