Im buying a new computer "laptop" to work on and i want to play some games on it. the computer is a HP Elitebook 820 g2. intel core i5 clocked at 2.2ghz can be overclocked to 2.7 and 4 gb ram 1600mhz ddr3l. its an intel hd 5500 in it. i may upgrade the ram so i get 4x4 1600mhz so i get 8gb ram. will it play games at decent level? not ultra or anything just medium-high. if i over clock and add an extra 4gb of ram will it be good enough for gaming? its the only computer i can buy so dont suggest an other pc.