Verdict

These are comparable SSDs. The WDS400T4B0E 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.

CT4000P3PSSD8
Crucial P3 Plus · 4TB · Desktop
€271 (€67.73/TB)
WDS400T4B0E
WD Blue SN5000 · 4TB · Desktop
€540 (€134.92/TB)

Value at a glance

Price / TB
CT4000P3PSSD8 $73.15
WDS400T4B0E $110.69
Endurance (TBW)
CT4000P3PSSD8 800 TB
WDS400T4B0E 1,200 TB

Price history

IT · cheapest per day

CT4000P3PSSD8 €271 WDS400T4B0E €540
zoomed · drag to zoom
€826 €523 €221 Sep 2024 Jan 2025 Jun 2025 Nov 2025 Apr 2026 Sep 2026
CT4000P3PSSD8 WDS400T4B0E
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type QLC QLC
Endurance (TBW) 800 TB 1,200 TB
DWPD - -
DRAM cache No No
Power-loss protection No No
Sustained write - -
Cost / TBW $0.366 $0.369
Price / TB $73.15 $110.69
Buy
€271
View at Amazon →
€540
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.

CT4000P3PSSD8

No Backblaze failure data for this model.

WDS400T4B0E

No Backblaze failure data for this model.