I purchased a 6 year old iMac from a coworker a few weeks ago knowing it needed a new hard drive. While it turned out for the better that the hard drive was fine after some diagnostics were performed, I knew my computer would need a speed boost to keep up with my demands. I contemplated processor and ram, however, these were not cost effective. I then decided to upgrade the standard drive to a SSD. These Sandisk drives are frequently on sale and quite a grab as compared to the Samsung equivalents. This SSD has given my iMac a dramatic speed boost. Where it used to boot up in about 45 seconds to a minute or more, it now does so within 10/15 seconds. Not to mention, this iMac now runs as quickly as those you'll find on display in the stores (at a fraction of the cost, tee-hee) In summary, this drive is an excellent option for speeding up your computer, at a great price! Makes my computer run like brand new!