Okay these are sata II ssds Toshibas a little slow but 297 each for 512gb they are on sale at owc. http://eshop.macsales.com/item/Toshiba/HNSNC512GBSJ/ these are ideal for 2010 and older mac minis. also if you have a lacie little big disk thunder bolt you can have a 1tb ssd for a good price. I am going to make a 1tb raid0 in one of my t-bolt cases. my cost will be about 700 for a 1tb raid0 ssd.