Hello i need to ask where to find a older Cpu for a MB Asus H81M-K that has 8gbs of ddr3 1600 ram 2X4gb sticks ? Right now it has a Intel G3258 3.2 Cpu and Was told to Upgrade it to a Intel I5 cpu but dont know where to Look for a Used one ? Ebay or ? It has a 650 power supply with a Gtx 770 2gb and a 240 SSD and 1 terabyte HD Blue Western digital and Windows 10 64bit . Any help or Links to a Better Cpu would be good Todays Newer Intel Cpus cost too much. This is for Gaming like Overwatch Rainbow 6 siege,Mechwarrior online Gta 5. Thanks will wait for a good Info !