So purchased several new components for building my new system (finally) and reading up on the new'ish PCIe ssd's. Surely someone has some experience with them and insights?

Im not too familiar with them but would one say its a replacement for a SATA SSD or compliment to one?

Im looking at this one:

http://www.newegg.com/Product/Produc...82E16820147594

Thanks