Verdict

For a NAS cache or write-heavy pool, the WDS400T1R0C is the safer pick - the CT4000P3PSSD8 uses QLC NAND, which wears out faster and slows badly under sustained writes (light, read-mostly use only).

CT4000P3PSSD8
Crucial P3 Plus · 4TB · Desktop
€271 (€67.73/TB)
WDS400T1R0C
WD Red SN700 · 4TB · NAS
€922 (€230.57/TB)

Value at a glance

Price / TB
CT4000P3PSSD8 $73.15
WDS400T1R0C $249.01
Endurance (TBW)
CT4000P3PSSD8 800 TB
WDS400T1R0C 5,100 TB

Price history

IT · cheapest per day

CT4000P3PSSD8 €271 WDS400T1R0C €922
zoomed · drag to zoom
€1,069 €645 €221 Aug 2024 Jan 2025 Jun 2025 Nov 2025 Mar 2026 Aug 2026
CT4000P3PSSD8 WDS400T1R0C
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type QLC TLC
Endurance (TBW) 800 TB 5,100 TB
DWPD - 0.7
DRAM cache No Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.366 $0.195
Price / TB $73.15 $249.01
Buy
€271
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€922
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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.

WDS400T1R0C

No Backblaze failure data for this model.