Better go for new mobo+ cpu. that h57 chipset is outdated. those 1st gen i cpus don't have avx.
try for something like i3/i5 6xxx, you don't need more than 400-450w psu.
how do I do that?
go to ebay and buy an i7 870 for $50 and pair it with a 100$ gtx 1050 and you wont need a new power supply. That should at least triple your gaming performance. Or as others have said buy a i3 6100 and cheap z170 board.