Please help, looking to buy best pc for gaming

[ErikLookingForPC]

Link1: http://www.kijiji.ca/v-desktop-computers/markham-york-region/selling-gaming-pc-i5-2500k-gtx750ti/1120135128

*i have extra hhds so dont worry about that on the first link*

Link 2: http://www.kijiji.ca/v-desktop-computers/markham-york-region/custom-gaming-pc-550-obo-need-it-gone/1120800110?enableSearchNavigationFlag=true

Link 3: http://www.kijiji.ca/v-desktop-computers/markham-york-region/gaming-pc-manitor-keyboard-and-mouse/1121468080?enableSearchNavigationFlag=true

Link4: http://www.kijiji.ca/v-desktop-computers/city-of-toronto/custom-built-gaming-computer-q9300-hd7770/1121999770?enableSearchNavigationFlag=true *NEW*

The keyboard, mouse, and monitors do matter for me. Feel free to suggest any other ads but keep them within $650. Could you guys help me chose he best one.

 

[ModernWarfare]

link 1 is the best bet while one of those links have either a really weak cpu or gpu. so gtx 750ti is the best one because its newer faster with maxwell architecture. with that cpu you can also upgrade to a gtx 960 or even better gpu with that cpu in the future so yea.