This PSU is serving me for more than 1 year and 4 months with my i3 2100 - 6GB RAM and GTX 960 2GB but now I'll be upgrading to 1060 3gb. Do I need to change it to Seasonic S12II 520w? I know it's a low tier psu but this psu has been with my for 1 year and 4 months and no issue