Amazon offers the Intel 530 Series 120GB 2.5″ SATA III Solid State Drive at its best price ever, just $79.99 with free shipping. It retails for $170, but typically sells for around $100. It features sequential read/write speeds of up to 540 MB/s and 480 MB/s. Upgrading to a SSD is one of the best ways to breathe new life into your aging PC or Mac. Rated 4.6 out of 5 stars from 303 Amazon reviewers.
Need more space? The 240GB version is $135.99 with free shipping and Newegg has the 500GB Samsung 840 EVO Series for $244.99 plus $0.99 shipping.