Verdict

For a NAS cache or write-heavy pool, the ZP4000GM3A063 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)
ZP4000GM3A063
Seagate FireCuda 530R · 4TB · Desktop
£638 (£159.52/TB)

Value at a glance

Price / TB
CT4000P3PSSD8 $73.15
ZP4000GM3A063 $182.42
Endurance (TBW)
CT4000P3PSSD8 800 TB
ZP4000GM3A063 5,050 TB

Price history

UK · cheapest per day

CT4000P3PSSD8 £652 ZP4000GM3A063 £638
zoomed · drag to zoom
£657 £415 £172 Oct 2024 Mar 2025 Aug 2025 Jan 2026 May 2026 Oct 2026
CT4000P3PSSD8 ZP4000GM3A063
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type QLC TLC
Endurance (TBW) 800 TB 5,050 TB
DWPD - -
DRAM cache No Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.366 $0.144
Price / TB $73.15 $182.42
Buy
£652
View at Amazon →
£638
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.

ZP4000GM3A063

No Backblaze failure data for this model.