Hi, I have a 2GB stick of 667 MHZ Ram and a 2 GB stick of corsair xtreme performance ram 800 MHZ Both DDR2, I need to overclock them because they are not giving me the performance I need for GTA V, I have no idea why, but CPU - Z is showing them running at 333 MHZ..... My CPU shows 3.1 GHZ in bios but it's only showing 2.5 GHZ (stock) in windows, I have the q9300