Wah i shock like hell when my pc fan suddenly turn on jet engine mode. The noise was so crazy. I never expect the fan to be so powerful until today.

So question is since only one memory stick is broken can I mix it up with a new 667 Mhz stick in the same slot? Would it still be able to run in DDR2? I am asking because 667Mhz stick is cheaper than the 533Mhz version.

Any help can appreciate. Thanks.