My corsair vs450 is dying and I need a new power supply. I believe that the vs series is considered bad (tier 4). A psu calculator said i should use a 300w psu but I plan to upgrade my gtx 750TI to a 1070 at the end of the year. I want something cheap that can power the 1070 but will be reliable. My processor is a i5 4590s (Haswell). Does anyone have recommendations on which psu I should get?