Verdict

These are comparable SSDs. The ZP500NM3A002 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.

WDS500G1R0C
WD Red SN700 · 0.5TB · NAS
No CA price yet
ZP500NM3A002
Seagate IronWolf 525 · 0.5TB · NAS
No CA price yet

Value at a glance

Endurance (TBW)
WDS500G1R0C 1,000 TB
ZP500NM3A002 700 TB

Price history

CA · cheapest per day

WDS500G1R0C C$111 ZP500NM3A002 C$115
zoomed · drag to zoom
C$144 C$126 C$107 Aug 2024 Nov 2024 Feb 2025 Jun 2025 Sep 2025 Dec 2025
WDS500G1R0C ZP500NM3A002
Capacity 0.5 TB 0.5 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 1,000 TB 700 TB
DWPD - 0.7
DRAM cache Yes -
Power-loss protection No No
Sustained write - 525 MB/s
Cost / TBW $0.215 -
Price / TB $429.98 -
Buy No CA price yet 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.

WDS500G1R0C

No Backblaze failure data for this model.

ZP500NM3A002

No Backblaze failure data for this model.