These 3.5" hard drives are available in 5TB, 6TB, 8TB, 10TB, 12TB, & now even 14TB sizes. They utilise the newer SATA III 6Gb/s interface, ensuring as high speeds as possible with their mechanical technology, especially when using them in RAID. They're the most popular drives for today's desktop PCs, thanks to high spindle speeds, lots of cache and huge capacities.