Thanks all for replying.
The HD7850 looks good. Had not done much research. It's hectic comparing cards.
So HD7850 is fixed.
But what about the Motherboard?
HD7850 : PCI Express 3.0 x16 and the Motherboard suggested has PCI Express 2.0 x16
The asus p8h77is out of budget.
For SMPS what...