[This review was collected as part of a promotion.] I've had so many drives that begin to bug the whole computer down once they've been filled with information past the halfway point. I have about 20% space left on this drive and I haven't noticed any lag at all. It's the first time I've had to drive that didn't affect the overall performance of the system because it had too much information on it. It was always kind of upsetting because isn't that the point? Aren't you supposed to be able to fill it up with the things that are important to you or the things that you need for your project or job? You shouldn't have to buy a portable drive every time the hard drive of your computer gets a little bit full in order for your system to continue working smoothly. I won't be buying anything except Samsung from here on out.