What graphics card can run dayZ on highest settings?

I wanna run games like minecraft on 300fps and dayZ on highest settings with no lag.

I'm planning on making a new pc and need a good and affordable graphics card, if you need a price range, I'm think maybe $250 AUD - $300 AUD

I'm also planning on playing much more games like gary's mod, on highest with no lag.
Any recommendations, by the way my CPU will be an i5 4670 haswell 6mb cach, if you wanted to know.

And 8GB of ram.

Buy an R9 270X. I think that is the best in that range.

Well… PNY GeForce GT640 2GB should be good…

Nvidia GTX 660 or GTX 750Ti.
The GT640 isn't really for gaming.