I'm making my first gaming PC and would like to know if I should make any changes to it(cost effeciency or performance). Here is my setup(all were off of newegg.com).
I built a computer for a friend in a z9 plus. Put your 8pin through the cut out before you install the mobo. Also idk how much better a 3gb performs over à 2gb at 1080 so you should look at some bench marks on that also only msi power edition 660tis can over volt if that is important to you.
Everything looks good, but perhaps consider having a lower wattage power supply, say 520-600 because you will not need it with a single 660ti. I would reccommend a seasonic 520 watt modular power supply (link below).