I wouldnt recommend to spend that much money to buy a computer with those specs just to play DayZ, an i3 or i5(2nd gen) and 4gb ram with a decent graphics card or a gaming one like Nvidia GTX4xx, 5xx, 6xx(dont know much about ATI cards :( ) to play on high with 1GB memory would be enough,i know some custom pc websites and a forum to help u build if u want to