you can replace a laptop with an ssd drive 2.5, are they fast of course, as they have no metal platter like hard drives, think of it like an usb memory stick, do they fail..yes they do, always good to backup you important data to an external usb device mem card, hardrive, question is..do i have a fast system already, defragmented extra memory etc, i would not buy one unless i had for example a system that had at least an i5 cpu, not for an old pentium cpu, upgrade and see the difference, i like i7 cpu's myself.