I have an old PC. Its built with intel DH55TC motherboard and i3 540 processor. 2 GB DDR3 1333 Mhz Ram and a generic Zebronic PSU. Now to upgrade this old machine i have bought a Corsair 450w PSU, Zotac GT 1030 GPU and SK hynix 4 GB DDR3 10600U Mhz.
The PSU and the GPU works fine i guess...