Summary: I am using this on an SATA2 connection and still was amazed at the performance increase. It made a new machine out of an old box of a computer. I would recommend an upgrade to an SSD if you haven't already. AWESOME!
Pros: Installed easily. Upgraded from HD and WOW what a difference. OS starts/closes lightning fast. Maps on CODBO2 load super fast.
Summary: I'm using this 240GB SSD to upgrade a 2011 dual-core Win7 laptop into Win 8.1. Definitely worth the upgrade, everything is much faster with SSD and Win8.1, giving couple of years of life of the laptop.
Summary: I had a 250GB Seagate black in my ACER netbook. I tried to replace that drive with a 500GB snd 750GB (both black) and a Seagate 240GB SSD. In each case, the OS installed, but doesn't install properly when cloning the original disk. The 249GB PNY worked just fine, however.