I have a Lattitude c840 laptop that I used at work. I am purchasing it for cheap and doing some things to tweak it to give it a bit more life (hope to use it for another year or two). Right now it has a meager 256 mb pc2100 200 pin so-dimm in it. I am looking at some CAS 2 memory from Patriot on Newegg, or just standard stuff, but most of it is pc2700 200 ping so-dimm. I am pretty sure this stuff will still work in my system, but will just be running at a lower clock speed than what it is rated for. Am I correct? Thanks!