If you've heard all the hype about Solid State Drives and are wondering what they are and why the market has gone berserk over them, it is because the market has a legitimate reason to, and here's why. SSDs can essentially be considered a memory stick, like maybe a very large storage USB, but they aren't like HDDs or your normal hard disks. Unlike an HDD which uses a rotating movement to read and write data, an SSD stores the information of different microchips purposely making it substantially faster.
An SSD trumps a HDD any day because of several reasons. Let's start with the speed. An SSD uses the NAND based flash memory and does not need to mechanically move to store data, making it a substantially faster processor than an HDD meaning that installing it in your computer will improve daily performance substantially. The boot up time for an SSD to activate windows 7 is about 20 seconds as compared to an HDD which takes about 40 seconds.
An SSD will draw less power than an HDD will, usually an SSD uses 2-3 watts on an average as compared to a HDD which uses up 6-7 watts, and you know what that means? It means an SSD will save you about 30 minutes of battery time on your device. Moreover an SSD doesn't make any sounds unlike the spinning and clicking you hear on an HDD and it doesn't heat up that much because it draws lesser power and there are no moving parts. So, with an SSD you are less likely to want to buy a cooling pad as when you own an HDD device. Copying files is a dream when you own an SSD- you can copy up to 200MB/s as compared to an HDD's 50MB/s.
There are a billion more reasons apart from the slightly hefty price that will make you want to buy an SSD over an HDD, so look it up.