Verdict

These are comparable SSDs. The WDS400T1R0C is rated for the most write endurance, so it lasts longest in a NAS that sees steady writes; for light use any is fine and price decides.

LNM790X004T-RNNNU
Lexar NM790 · 4TB · Desktop
€856 (€213.95/TB)
WDS400T1R0C
WD Red SN700 · 4TB · NAS
€1,087 (€271.74/TB)

Value at a glance

Price / TB
LNM790X004T-RNNNU $145.00
WDS400T1R0C $238.92
Endurance (TBW)
LNM790X004T-RNNNU 3,000 TB
WDS400T1R0C 5,100 TB

Price history

ES · cheapest per day

LNM790X004T-RNNNU €856 WDS400T1R0C €1,087
zoomed · drag to zoom
€1,135 €732 €328 Oct 2024 Mar 2025 Jul 2025 Dec 2025 May 2026 Oct 2026
LNM790X004T-RNNNU WDS400T1R0C
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 3,000 TB 5,100 TB
DWPD - 0.7
DRAM cache No Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.193 $0.187
Price / TB $145.00 $238.92
Buy
€856
View at Amazon →
€1,087
View at Amazon →

Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price. Buy links are Amazon affiliate.

LNM790X004T-RNNNU

No Backblaze failure data for this model.

WDS400T1R0C

No Backblaze failure data for this model.