I am building a gaming PC and am having a tough time choosing what hard drive setup to use. I originally thought about having and SSD for everything, but then I saw that many people have a smaller SSD for the OS with a 7200rpm HDD for gaming (and all other applications). Is this because there is no noticeable difference between gaming on an SSD vs an HDD? I am so confused, so I decided to come to the Tom's Hardware forums for advice. So, sole SSD or smaller OS SSD with a larger 7200 rpm drive for gaming? Thanks!