What is a good computer for games such as Day-Z and CSGO

THE PC CASE BUILT IN - Vantage Blue Gaming Case with LED Fans MOTHERBOARD - Gigabyte F2A68HM-HD2 MOTHERBOARD EXPANSION SLOTS - 1x PCI Express x16, 1x PCI Express x1, 1x PCI CPU TYPE - AMD FM2 Dual Core CPU MODEL - AMD FM2 A6 6400K 3.9ghz Dual Core CPU SOCKET - AMD FM2 CPU CLOCK SPEED - 3.9 Ghz CPU MAX TURBO CLOCK SPEED - 4.1 Ghz CPU COOLER - Standard AMD Cooler MEMORY - 8GB DDR3 1600mhz Performance Ram HARD DRIVE SIZE - 1tb Seagate Barracuda Sata 6Gb/s 64mb Cache 7200rpm OPTICAL DRIVE - Samsung 24x Sata DVD Writer GRAPHICS CARD - Onboard AMD Radeon HD 8470D PSU SIZE - 500 Watt Power Supply With 12cm Fan