A quick question on a semi-normal komplektujushhie

Greetings friends and not enemies!

I am fond of PC but this is special hobby not to call, generally to the question...

Have PC - Intel Core i5-4570, motherboard ASUS Maximus VII Ranger 8GB and operatives will say it rules? But hell there recently, none has minuseulus and another vidyuhi buy soon, but there is vidyuhi NVIDIA GeForce GTS 250... See if you can connect it to my motherboard and play the same Garry's Mod or Half Life 2?

P. s Those who went into the topic to make a joke asking to go to the left and the right well it is possible and directly.
PS.s Has the same block-power supply to 700w.