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WD Ultrastar DC SN640 1.6TB U.2

WUS4CB016D7P3E4
Ultrastar DC SN6401.6TBNVMe-PCIe3U.2
No current price
newNot available
Price updated
Price accurate as of Nov 14, 2026, 12:00 AM
No current offer

The WD Ultrastar DC SN640 1.6TB U.2 is a 1.6TB NVMe-PCIe3 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 1.6TB

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
Solidigm D7 Series D7-P5620 - SSD - 1.6 TB - Internal - 2.5" (6.4 cm) - U.2 PCIe 4.0 x4 (NVMe)
Solidigm D7 Series D7-P5620 - SSD - 1.6 TB - Internal - 2.5" (6.4 cm) - U.2 PCIe 4.0 x4 (NVMe)
1.6TBNEW$838.05$1341Buy on Amazon
Intel Solid State Drive SSDSC2KB019T801 D3-S4510 1.9TB 2.5 inch SATA 6GB/S 3D2 T
Intel Solid State Drive SSDSC2KB019T801 D3-S4510 1.9TB 2.5 inch SATA 6GB/S 3D2 T
1.9TBREFURB$152.11$289Buy on Amazon
Samsung 1.92TB PM9A3 2.5" U.2 Enterprise SSD/Solid State Drive
Samsung 1.92TB PM9A3 2.5" U.2 Enterprise SSD/Solid State Drive
1.92TBREFURB$447.92$860Buy on Amazon
Solidigm D3 Series D3-S4520 - SSD - 1.92 TB - Internal - 2.5" (6.4 cm) - SATA 6Gb/s
Solidigm D3 Series D3-S4520 - SSD - 1.92 TB - Internal - 2.5" (6.4 cm) - SATA 6Gb/s
1.92TBREFURB$454.66$873Buy on Amazon
Micron SSD 1TB M.2 2230 30mm NVMe PCIe 4.0 Gen4 x4 MTFDKBK1T0TFK 2450 Seri...
Micron SSD 1TB M.2 2230 30mm NVMe PCIe 4.0 Gen4 x4 MTFDKBK1T0TFK 2450 Series Solid State Drive for PS5 Dell HP Lenovo Laptop Desktop Ultrabook Surface Steam Deck
1TBNEW$248.00$248Buy on Amazon
Micron 1TB 2500 M.2 2230 PCIe Gen 4.0x4 NVMe SSD Up to 7100 MB/s Compatibl...
Micron 1TB 2500 M.2 2230 PCIe Gen 4.0x4 NVMe SSD Up to 7100 MB/s Compatible with Steam Deck Surface Ally Mini PCs Laptops
1TBNEW$249.99$250Buy on Amazon

Where this listing sits: WD 1.6TB 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
Solidigm D7 Series D7-P5620 - SSD - 1.6 TB - Internal - 2.5" (6.4 cm) - U.2 PCIe 4.0 x4 (NVMe)NVMeNew$838.05$1340.88Buy on Amazon
Model context

Part of the WD line we track.

Quick Verdict

The WD Ultrastar DC SN640 1.6TB U.2 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

Capacity1.6TB
Form FactorU.2
InterfaceNVMe-PCIe3
Recording Tech—
Sector Size—
Workload Rating—
DWPD2
TBW—
Warranty5 years
ASINB0HC7KXP82
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 1.6TB drive we track →Cheapest per terabyte, all categories →Category price trends →

Also appears in

Enterprise SSDs
Other pages

Frequently Asked Questions

Not right now: Amazon shows no current offer for ASIN B0HC7KXP82. The in-stock alternatives nearest its 1.6TB capacity are on this page, ranked by live price.

This listing (WUS4CB016D7P3E4, ASIN B0HC7KXP82) 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. Consider multiple drives for larger datasets.
💾
Bulk Cold Data Archive
Storing large volumes of infrequently accessed data.
✗ Not ideal
At ~$306/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 1.6TB and 2 DWPD you have 5,980,160GB 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.