polaco98 :
Its my first build so i dont know much about pc parts.. do you think my power supply can handle it?
motherboard: asus vii hero
cpu: i7 4790k
gpu: msi gtx 980ti gaming 6g
psu:750w evga g2
ram:16 gb corsair vengeance
Hi - Your 750w G2 is way more than sufficient for your system. There is no need to upgrade.
A good quality 650w unit would allow for overclocking, so a very good 750w (your G2) has
plenty of headroom.