The Intel 525 120 GB is an excellent SSD for putting in a laptop that already has a conventional hard disk, and thereby greatly enhancing performance. The SandForce controller is starting to show its age, however, it can no longer keep up with the latest generation SSD controllers.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips