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WD Ultrastar DC SN655 7.68TB U.3

WUS5EA176ESP7E1
Ultrastar DC SN655oltpTLC7.68TBNVMe-PCIe4U.3
No current price
newNot available
This offer: sold by TECH SUPPLIERS PRO · Amazon says New / Unknown
Price updated
Price accurate as of Oct 31, 2026, 03:19 PM
No current offer

The WD Ultrastar DC SN655 7.68TB U.3 is a 7.68TB NVMe-PCIe4 SSD in new condition. It has no current offer on Amazon. The in-stock alternatives nearest its capacity are listed below.

In stock instead - nearest to 7.68TB

6 in-stock listings · this listing has no current offer on Amazon · ranked by live cost per tb, refreshed about once a day

DriveCapacityCondition$/TBPrice
Samsung PM9A3 3.84TB M.2 NVMe3.84TBNEW$466.15$1790Buy on Amazon
Micron 7450 PRO 3.84TB U.3
MTFDKCC3T8TFS
3.84TBREFURB$518.23$1990Buy on Amazon
Micron 7600 PRO 3.84TB U.2 PCIe5
MTFDLAL3T8THG
3.84TBNEW$676.82$2599Buy on Amazon
Crucial P310 2TB M.2 2230 SSD
Crucial P310 2TB M.2 2230 SSD, PCIe Gen4 NVMe, Up to 7,100MB/s, Ideal for Steam Deck, ASUS ROG Ally, MSI Claw, Mini PCs & Ultrabooks, Solid State Drive - CT2000P310SSD2
2TBREFURB$154.98$310Buy on Amazon
TeamGroup MP44S SSD 2TB SLC Cache Gen 4x4 M.2 2230 PCIe 4.0 NVMe Steam Deck A...
TEAMGROUP MP44S SSD 2TB SLC Cache Gen 4x4 M.2 2230 PCIe 4.0 NVMe Steam Deck ASUS ROG Ally Mini PCs R/W Speed up to 5000/3500 MB/s TM5FF3002T0C101
2TBNEW$155.00$310Buy on Amazon
Crucial P310 M.2 2280 2TB PCI-Express 4.0 x4 NVMe 3D NAND Internal Solid St...
Crucial P310 M.2 2280 2TB PCI-Express 4.0 x4 NVMe 3D NAND Internal Solid State Drive (SSD) CT2000P310SSD8
2TBNEW$156.48$313Buy on Amazon

Where this listing sits: WD 7.68TB NVMe — each page is the live ranking for that slice of the catalogue.

Before you buy: check the bay and the lanes

U.2 and U.3 drives need a backplane wired for NVMe or an adapter carrying PCIe lanes to the bay - a SAS backplane will not do it. Check your chassis supports NVMe in the slot you plan to use before ordering. NVMe drive prices and form factors

Same capacity, other options
DriveInterfaceCond$/TBPrice
Samsung PM9A3 7.68TB U.2 NVMeNVMe-PCIe4Refurb$353.64$2715.99Buy on Amazon
Samsung MZ-QL27T600 7.68TB U.2 NVMeNVMe-PCIe4Refurb$429.69$3299.99Buy on Amazon
Samsung PM9A3 7.68TB U.2 NVMeNVMe-PCIe4New$546.85$4199.77Buy on Amazon
Model context

Part of the WD line we track.

Quick Verdict

The WD Ultrastar DC SN655 7.68TB U.3 delivers enterprise NVMe performance. Suited to read-intensive cloud workloads and mixed enterprise applications. Verify U.2/U.3 backplane compatibility before ordering.

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Specifications

Capacity7.68TB
Form FactorU.3
InterfaceNVMe-PCIe4
Recording TechTLCSELLER CLAIM
Sector Size—
Workload Rating—
DWPD—
TBW14016TB
Warranty5 years
ASINB0CJ7XFW86
Market context

We do not have enough in-stock comparators of this type today to place this price against the rest of the market. The category page below ranks everything we do have.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 7.68TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 7.68TB NVMe-PCIe4
#1Samsung PM9A3 7.68TB U.2 NVMe
$353.64/TB
#2Samsung MZ-QL27T600 7.68TB U.2 NVMe
$429.69/TB
#3Samsung PM9A3 7.68TB U.2 NVMe
$546.85/TB
#4WD Ultrastar DC SN655 7.68TB U.3THIS DRIVE
Out of stock

Also appears in

Enterprise SSDs
Other pages
Price trends
Brands
Head to head
By workload

Frequently Asked Questions

Not right now: Amazon shows no current offer for ASIN B0CJ7XFW86. The in-stock alternatives nearest its 7.68TB capacity are on this page, ranked by live price.

This listing (WUS5EA176ESP7E1, ASIN B0CJ7XFW86) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new. The stored warranty on this row is 5 years, as the listing states it.

Use Case Scenarios

🗄️
OLTP Database Primary Storage
PostgreSQL, MySQL or Oracle requiring low latency and high IOPS.
✓ Excellent fit
NVMe delivers sub-200μs latency vs 5ms for HDD — a 25x improvement that directly reduces query response times. At 1 DWPD verify your daily write volume stays within endurance limits.
🤖
AI/ML Training & Inference
GPU server loading training datasets or serving inference at high throughput.
✓ Excellent fit
NVMe at 6,900MB/s eliminates storage bottlenecks when loading datasets to GPU memory. At 7.68TB you can store substantial model weights on a single drive.
💾
Bulk Cold Data Archive
Storing large volumes of infrequently accessed data.
✗ Not ideal
At ~$1085/TB, NVMe costs 10x more than enterprise HDD for cold data. Unless you need fast retrieval, HDDs or LTO tape are far more cost-effective.

Maintenance & Troubleshooting

Maintenance Checklist

On installUpdate drive firmware
Check manufacturer website for latest firmware. Enterprise SSDs receive updates that fix performance and reliability issues.
On installEnable power loss protection verification
Enterprise NVMe drives have onboard capacitors for power loss protection. Verify in drive logs after first power cycle.
MonthlyCheck SMART/NVMe health attributes
Run nvme smart-log /dev/nvme0 (Linux). Monitor: Media_Errors, Available_Spare, Percentage_Used.
MonthlyMonitor write endurance consumption
Track Percentage_Used SMART attribute. At 80%+ consider planning replacement. At 7.68TB and 1 DWPD you have 14,352,384GB lifetime writes.
QuarterlyReview error logs in server BMC
Check iDRAC, iLO or IPMI logs for NVMe errors, PCIe link speed downgrades, or unexpected resets.

Troubleshooting Guide

Cause: PCIe slot not initialized, missing NVMe driver, BIOS not updated, or U.2 cable issue.
Fix: Check BIOS for NVMe in PCIe enumeration. Update server firmware. Reseat U.2 cable. Verify PCIe bifurcation if using adapter. Test in another slot.