ASUS VivoBook K571 features up to a 256GB PCIe SSD with optional Intel Optane™ memory for 35% faster data access speeds. Intel Optane uses a caching algorithm that intelligently accelerates hard disk performance to speed up multitasking and app load times, and reduces boot up and resumes times. It boosts storage performance to SSD-like levels while giving you the benefits of the large capacity of a traditional hard drive. Alternatively, a dual-storage option provides the best of both worlds — the blistering data speeds of up to a 256GB SSD and the large storage capacity of up to a 1TB HDD. Install apps on the SSD for superfast response times, and use the HDD to house large files such as movies, music libraries, and photo albums.