
Samsung 860 PRO 4TB 2.5 Inch SATA III Internal SSD
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The Samsung 860 PRO is a 2.5-inch SATA III solid-state drive built on Samsung's 64-layer MLC V-NAND with an in-house MJX controller. The 4TB model is the largest in the line and one of the few high-capacity SATA drives using MLC memory rather than TLC, which is why it carries a high endurance rating and long warranty. It suits workstation, NAS and archival builds that need a large, durable SATA drive rather than NVMe speed. Against TLC rivals like the Samsung 870 EVO or Crucial MX500, it trades a higher price for better write endurance and steadier sustained writes; against NVMe drives it is far slower but works in any 2.5-inch bay.
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Owners of the 860 PRO line generally praise its reliability and steady performance under sustained writes, and the 4TB model is valued by NAS and workstation users who want a big SATA drive that lasts. The main complaint is that it is expensive next to TLC drives and slower than NVMe alternatives.
The Samsung 860 PRO is a 4TB internal solid-state drive in the 2.5-inch format. It connects through SATA III.







