Is it Compatible? I have i5 2500K 3.30 GHz ~ 3.6 GHz. Award Modular Bios v6.00PG. 16 GB Ram MoBo and 1 PCE 2 GFX slot. Will it work on my Gigabyte GA-H61M-D2H MoBo [v 1.0] and if so how much PSU needed. [Presently have 500-550 PSU. need check].Also if another MoBo needed which is economically lower best MoBo for same?