I currently have an Alienware X51 R2 with a GTX 645, i3-4130, and 4gb of ddr3 ram. I am looking to upgrade to a GTX 1050ti SSC and 8gb of ddr3 ram. I have a 180w PSU. With my small budget I can't afford to buy another PSU (the only other one to get is a dell 330w) and I was wondering if the 180w could still hold run a 1050ti SSC, 8gb of ram and i3-4130.