If you are spending 3000-4500 is that American dollars? Because if so you should just get a completely new PC from a high end maker.
My suggesting would be though any mid range 7000 series Radeon. or if you are a nVidia man either get something in the mid 500 series or wait for the lower 600 series cards.
Its Rupees. Before i edit it you replayed. I have edited it,
And thanks for very quick reply.