78% under what the other stores charge
Compared across 8 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
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The WD Ultrastar DC SN640 is a 3.84TB enterprise NVMe SSD in a 2.5-inch U.2 form factor with a PCIe 3.1 x4 interface. It is built for data center and server use, with 96-layer 3D TLC NAND, 256-bit AES encryption and power-loss protection. Its read-heavy design favors workloads that read far more than they write, so it suits caching, virtualization and general server storage more than heavy write logging. Against PCIe 4.0 enterprise drives it gives up peak sequential speed, but it runs cool and draws little power, which matters in dense racks.
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Lowest price we've seen: $244.90 on Nov 13 at eBay. Tracked across 7 stores since Nov 13.
Ratings for this drive are very high, and owners describe it as a reliable enterprise SSD that runs cool and holds steady throughput in servers. Buyers value the capacity and the U.2 NVMe speed for the money compared with SATA drives.
The WD Ultrastar DC SN640 is an internal solid-state drive with 3840 GB of storage. It comes in a 2.5-inch form factor and connects through a U.2 PCIe 3.1 x4 (NVMe) interface.
The drive supports 256-bit AES encryption. The model number is WUS4CB038D7P3E3.
