Mac Book Pro Question

GhostPrime: an i7 is faster than an i5 under most (if not all) circumstances. An integrated GPU is under the minimum specs for World of Tanks, and is not advisable if you want to play the game.    Given the two Macs you listed, go for the 2.3 GHz Intel Core i7 NVIDIA GeForce GT 750M 2048 MB one. It's loads better, and exceeds the minimum requirements for WoT.