Santa29

Distinguished
Jan 30, 2007
9
0
18,510
I have the Cosair 6400C4, which gives 800 Mhz, but when I use CPU-Z, its showing the frequency to be 400Mhz? Is there something wrong?
 

slacker190

Distinguished
Oct 25, 2006
49
0
18,530
Your memory's physical speed is 400Mhz. Since it is DoubleDataRate, the effective clock is double that of the physical clock. When computing memory speed with DDR/DDR2, multiply the speed by 2