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WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)

WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)

5(67,686 ratings)

Best price now

$244.90at eBayChecked 13 h ago

85% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Lowest price today: $244.90 at eBay (checked Nov 13, 2026).
  • Checked at 6 stores.

Our take on the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)

The Ultrastar DC SN640 is a data-center NVMe SSD built for read-intensive server and storage work. This 7.68TB model uses a 2.5-inch U.2 form factor on PCIe 3.1 x4 with NVMe, so it slots into modern servers and backplanes rather than a consumer desktop. It carries 256-bit AES encryption and is rated for around one drive write per day, which suits mixed workloads more than heavy write logging. Against newer PCIe 4.0 enterprise drives it gives up peak sequential speed, but it offers far more capacity per slot than typical 1-2TB consumer SSDs and is built for 24/7 duty.

Best forServer and NAS builds with U.2 baysRead-heavy caching and tieringReplacing small consumer SSDs with high capacityVirtualization hosts needing encrypted storage
Pros
  • Huge 7.68TB capacity in a single 2.5-inch slot
  • NVMe over PCIe 3.1 x4 for low-latency server use
  • 256-bit AES encryption built in
  • Rated for around one drive write per day
  • Enterprise endurance and power-loss protection class
Cons
  • PCIe 3.1 interface trails PCIe 4.0 drives on throughput
  • U.2 connector needs a compatible server or adapter
  • Not a drop-in for laptops or most consumer desktops
  • Read-intensive rating, not for constant heavy writes

WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe) prices at every store

  • eBayNew

    In stock

    $244.90Checked 13 h ago
    Visit eBay
  • MAVROLERTNew

    In stockReturn policy

    $1,655.00Checked 13 h ago
    Visit MAVROLERT
  • Neobits.comNew

    Availability unknown

    $262.04Checked 13 h ago
    Visit Neobits.com
  • ValidQNew

    Availability unknown

    $566.00Checked 13 h ago
    Visit ValidQ
  • ServerOrbit.comNew

    Availability unknown

    $2,195.00Checked 13 h ago
    Visit ServerOrbit.com
  • itcreations.comNew

    Availability unknown

    $2,200.00Checked 13 h ago
    Visit itcreations.com

Store links may earn us a commission.

WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe) price history

Lowest price we've seen: $244.90 on Nov 13 at eBay. Tracked across 5 stores since Nov 13.

What reviewers say

  • 5 / 567,686 ratings

Ratings are very high, and owners describe the drive as reliable and fast in server roles. Most praise centers on capacity and steady performance under sustained load.

What people mention
  • ReliabilityPraisedOwners report the drive holding up under continuous server duty.
  • CapacityPraisedReviewers value getting 7.68TB from one 2.5-inch bay.
  • PerformancePraisedUsers describe NVMe speed as steady under sustained reads.
  • HeatCriticisedSome note the drive runs warm and needs case airflow.
  • CompatibilityMixedBuyers mention needing U.2 support or an adapter to install it.

About the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)

The WD Ultrastar DC SN640 is an internal solid-state drive with a capacity of 7680 GB. It comes in a 2.5-inch form factor and connects through a U.2 interface using PCIe 3.1 x4 (NVMe).

The drive supports 256-bit AES encryption.

Model
WUS4CB076D7P3E3
Series
Ultrastar DC SN640
Capacity
7680 GB
Form factor
2.5"
Type
Internal SSD
Interface
U.2, PCIe 3.1 x4 (NVMe)
Encryption
256-bit AES

Questions and answers

Will this fit a normal desktop PC?
Only if the board or an add-in card provides a U.2 port. It is a 2.5-inch U.2 drive, not SATA or M.2, so most consumer desktops need an adapter.
Is it faster than a PCIe 4.0 SSD?
No. It uses PCIe 3.1 x4, so peak sequential speed is lower than PCIe 4.0 enterprise drives. Latency and random reads remain strong for server work.
What workloads is it rated for?
It is a read-intensive drive rated at roughly one drive write per day. It suits caching, virtualization and general server storage better than constant heavy write logging.
Does it support encryption?
Yes. It includes 256-bit AES encryption for data at rest when the host and management software are configured for it.
What is in the box?
The drive itself. Cables, U.2 adapters and mounting hardware are not included and must match your server or enclosure.
Where is the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe) cheapest?
At eBay, for $244.90, 85% under what the other stores charge, as of our latest check.
What do buyers say about the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)?
Rated 5 out of 5 from 67,686 ratings.
Where can I buy the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe)?
6 stores we checked sell it, including MAVROLERT, eBay, Neobits.com, ValidQ, ServerOrbit.com.

Stores we've priced the WD Ultrastar DC SN640 WUS4CB076D7P3E3 SSD 7680 GB 2.5" U.2 PCIe 3.1 x4 (NVMe) at

  • Neobits.com deals and prices

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