USB2 VS SATA for file storage

Hi!

So my question is this:

I've scouted some really good prices for 2 different HDD's.

WESTERN DIGITAL ELEMENTS 500GB USB2.0 7200RPM 8MB

and

SAMSUNG F1 750GB 3.5\" SATA2 7200RPM 32MB HD753LJ

I will use them mainly for data storage. Will the difference be big in performance? Or is it not important for this kind of a task?

I of course understand, that the External one will offer much more freedom, but will it work as good as the internal one while connected to pc?

The only difference i can think of is the transfer speed. I myself have 3 external HDD's because i had no room for internal HDD's in my previous system. I would advise you to go with the internal HDD since it's faster and bigger for roughly the same money. If i could do it all over i would have never got these external HDD's because there slow and they make a lot more noise than an internal HDD does. (for reference i have a lacie brick, lacie porsche and a lacie big disk D2).

+1 on the eSATA. Only thing is that your MB needs to have eSATA support (connectors). But you can use the USB on other systems like rozar said. The external drives i mentioned were USB and there slow as hell especially when you are transferring big loads of data like i do. I use my external drives for backup by the way so i don't you them very often