Verdict

For a NAS cache or write-heavy pool, the LNM790X004T-RNNNU 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
£652 (£163.06/TB)
LNM790X004T-RNNNU
Lexar NM790 · 4TB · Desktop
£715 (£178.65/TB)

Value at a glance

Price / TB
CT4000P3PSSD8 $73.15
LNM790X004T-RNNNU $178.05
Endurance (TBW)
CT4000P3PSSD8 800 TB
LNM790X004T-RNNNU 3,000 TB

Price history

UK · cheapest per day

CT4000P3PSSD8 £652 LNM790X004T-RNNNU £715
zoomed · drag to zoom
£717 £444 £172 Oct 2024 Mar 2025 Aug 2025 Jan 2026 May 2026 Oct 2026
CT4000P3PSSD8 LNM790X004T-RNNNU
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type QLC TLC
Endurance (TBW) 800 TB 3,000 TB
DWPD - -
DRAM cache No No
Power-loss protection No No
Sustained write - -
Cost / TBW $0.366 $0.237
Price / TB $73.15 $178.05
Buy
£652
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£715
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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.

LNM790X004T-RNNNU

No Backblaze failure data for this model.