so thing is i have 2x4gb kingston ram wich is 800mhz and 2x4gb hypreX ram wich is 1600 mhz and when i check it in cpu-z its showing me that you have 800 mhz can anyone help me to solve this problem
Because it is double data rate (DDR) ram. It can transfer data twice per clock. So the advertised number is twice the actual clock speed. That is totally normal.