Hi everyone. After searching the web still cant find a answear to my problem. I bought a new pc wich a built in december: amd3850 8gb ram ripjaws gskill 2133 mhz 2x4 ssd r9 390 650 w MSI 990FXA GAMING ... Yesterday i bought 2 more sticks of ram, the same model and brand of the ones i had. I installed and they work fine at 1600 mhz, the 8gb worked great at 2133. When i tried the xmp option on bios the pc crashed when i joined online server of game Rust and CSGO, note that in csgo i could play vs bots with no crash. I tried to change the ram sticks of position, and i managed to join online servers but again i got a crash after 10 mins of playing. Anyone knows how to fix this problem? could it be the ram voltage that needs to go up a bit, if so to wich values? Thanks in advance.