Of those two the 7k200 is faster.
Just purchased a 320Gb Samsung Spinpoint M6 Model: HM320JI - 5400rpm
This is supposed to as quick as the 200GB Hitachi 7k200 7200rpm drive except in access times which it's marginally slower.... (I can live with that for the extra drive space).
Now I'm just waiting for my M1530 laptop to arrive so I test it (Dell have said Mon 25th)..
You using that instead of the the one Dell supply? Or are you planning on running it along side another hard drive? If so where did you get the hard drive case from to put in the Dell laptop?
Thanks