Samsung introduced a massive 4 terabyte variant of its popular SSD 850 EVO. The drive takes advantage of the company's latest 48-layer 3D V-NAND flash memory, and uses eight 2 Tb stacks driven by the company's existing S4LP052X01-8030 triple-core controller. The drive offers sequential transfer speeds of up to 540 MB/s reads, with up to 520 MB/s writes; up to 98,000 IOPS sequential reads, with up to 90,000 IOPS sequential writes. It's currently only offered in the 2.5-inch form-factor, with SATA 6 Gb/s interface. Backed by a 5-year warranty, the Samsung 850 EVO 4 TB is priced at US $1,499.