The ram should be happy running at a lower speed.
I was wandering if anyone could help. I have a Toshiba A110-233 which came with 512 mb RAM and I wanted to upgrade. I have already ignorantly purchased the RAM though and i bought 1gb SODIMM 667MHz and i checked it was all compatible and all looked fine. Now though just before installing this new RAM i noticed that the RAM already installed in the first slot was 553MHz opposed to the 667MHz i bought. If i were to install this 667MHz RAM in the same PC as the 553MHz RAM, what would happen???