Amd r7 vs rx 550 vs nvidia gt 730 vs gtx 750 ti

[hmohd9640]

Hi guys I'm going to buy a new G.P.U but I'm confused in nvidia gtx 750 ti and gt 730 (zotac) and in amd r7 360 and rx 550 which one is best for gaming my psu is 450 watts (Original) pls help me chose the best card

Thank you

 

[USAFRet]

MERGED QUESTION
Question from hmohd9640 : "Amd r7 vs rx 550 vs nvidia gt 730 vs gtx 750 ti"

Hi guys I'm going to buy a new G.P.U but I'm confused in nvidia gtx 750 ti and gt 730 (zotac) and in amd r7 360 and rx 550 which one is best for gaming pls help me chose the best card

Thank you