Which Computer Better For Gaming?

Wich computer? (Record with camtasia while playing KSP, Minecraft, Battlefield) price is a factor---
Lenovo ideapad: 16 GB DDR3 Ram, Intel Dual Core i7 2.3 GHz Processor, 1TB Hardrive, Dual NVIDIA GeForce GT750M Discrete Graphics for $1,049.00 or the
Alienware x14: 8gb Dual Channel DDR3, intel core i7 2.4 GHz (3.4 TurboBoost) Processor, 750 GB Harddrive, NVIDIA GeForce GT 750M, for $1,230.00

They both have tge same gpu, which is the most important factor in gaming. They will have the same performance. If you have 150 more dollars to soend, i would recommend that you choose the gtx765m gpu on the alienware 14. That will give you a huge performance boost over the 750.