Verdict

These are comparable SSDs. The SFYRD/4000G 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.

CT4000T705SSD3
Crucial T705 · 4TB · Desktop
C$1,067 (C$266.70/TB)
SFYRD/4000G
Kingston Fury Renegade · 4TB · Desktop
No CA price yet

Value at a glance

Endurance (TBW)
CT4000T705SSD3 2,400 TB
SFYRD/4000G 4,000 TB

Price history

CA · cheapest per day

CT4000T705SSD3 C$1,067
zoomed · drag to zoom
C$1,174 C$1,121 C$1,067 Aug 21 Aug 24 Aug 27 Aug 30 Sep 2 Sep 6
CT4000T705SSD3 SFYRD/4000G
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 2,400 TB 4,000 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.212 -
Price / TB $127.05 -
Buy
C$1,067
View at Amazon →
No CA price yet

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.

CT4000T705SSD3

No Backblaze failure data for this model.

SFYRD/4000G

No Backblaze failure data for this model.