Enterprise SSDs ←

WD Ultrastar DC SN840 6.4TB U.2 NVMe PCIe 3.0

WD · Ultrastar DC SN840 · 6.4TB · NVMe · U.2 · PCIe 3.0 · 3 DWPD

No pricing data yet for this market. Browse nearby SSD markets →.

Market signals

Derived from observed listings across all SKUs in this class.

▶What do OEM / Original / Compatible mean?
OEMCertified by a server vendor (Dell, HPE, Lenovo). May carry firmware locks and qualifications. Priced higher for vendor support and warranty alignment.
OriginalThe underlying component manufacturer's part, without OEM server-vendor branding or firmware lock. Typically the market pricing reference — platform compatibility should still be verified.
CompatibleThird-party alternatives meeting the same spec. Often 15–40% cheaper. May trigger vendor warnings on OEM-locked platforms — verify before substituting.
Liquidity
Insufficient
Only 0 samples — treat any range as directional only.
▶What do the signal colors mean?
Favorable — Tight spread, meaningful discount, or strong liquidity.
Neutral — Normal market conditions. No action flag.
Investigate — Wide spread, inverted pricing, or low sample count.
High alert — Very wide spread or significant price anomaly.
Insufficient — Too few samples to produce a reliable signal.

Part numbers in this market

3 part numbers tracked for this SSD market.

ManufacturerMPNCertification
Western Digital400-BEJLoem
Western DigitalSN840-6400GBoriginal
Western DigitalWUS4C6464DSP3X1original

Signals are observations from available data at a point in time — not advice. Verify independently before transacting. Disclaimer

Compare nearby SSD markets

Related capacities and enterprise SSDs with a similar interface, form factor, or endurance class.

WD Ultrastar DC SN840 3.2TB U.2 NVMe PCIe 3.03.2TB · NVMe · U.2 · 3 DWPD→WD Ultrastar DC SN840 1.6TB U.2 NVMe PCIe 3.01.6TB · NVMe · U.2 · 3 DWPD→Samsung PM1735 6.4TB U.2 NVMe PCIe 4.06.4TB · NVMe · U.2 · 3 DWPD→Solidigm D7-P5620 6.4TB U.2 NVMe PCIe 4.06.4TB · NVMe · U.2 · 3 DWPD→Samsung PM1735 3.2TB U.2 NVMe PCIe 4.03.2TB · NVMe · U.2 · 3 DWPD→Solidigm D7-P5620 3.2TB U.2 NVMe PCIe 4.03.2TB · NVMe · U.2 · 3 DWPD→

Choosing between endurance tiers? Read the SSD endurance guide →

AI
AI Research Assistant
Ask about market signals and prices
Preview
What's the spread on this market right now?
Once live, I'll answer questions like this using the same real-time spread, liquidity, and pricing signals shown on the page — not fabricated numbers.
Should I wait or buy now?
I'll help you weigh timing based on live trend direction and liquidity for the exact market you're viewing.
Research assistant — coming soon