If anyone is on the fence about the new Seagate Hybrid drives
The hybrid drive is 7200 rpm, 500gb, 32mb cache plus 4gb of SLC NAND. I put one in this tired old Macbook i have. This thing now boots in 5.9 seconds, reboots in 5.3 seconds, shuts down in 1.5 seconds, launches CS 4 Photoshop in 2.3 seconds and waking from sleep is INSTANT. Well worth the $99. Every application practically launches instantly and its like getting a new computer!!! BTW, this is my second drive. The first one i put in my mini and it made a huge difference as well.