Verdict

These are comparable SSDs. The SEDC600M/960G 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.

SEDC600M/960G
Kingston DC600M · 0.96TB · Enterprise
No ES price yet
SNV3510-400G
Synology SNV3510 · 0.4TB · NAS
No ES price yet

Value at a glance

Endurance (TBW)
SEDC600M/960G 1,752 TB
SNV3510-400G 491 TB
DWPD
SEDC600M/960G 1.0
SNV3510-400G 0.7

Price history

ES · cheapest per day

SEDC600M/960G €274
zoomed · drag to zoom
€288 €163 €39 Sep 2024 Dec 2024 Apr 2025 Jul 2025 Oct 2025 Feb 2026
SEDC600M/960G SNV3510-400G
Capacity 0.96 TB 0.4 TB
Form factor 2.5 M.2
Interface SATA NVMe
NAND type TLC TLC
Endurance (TBW) 1,752 TB 491 TB
DWPD 1.0 0.7
DRAM cache Yes -
Power-loss protection Yes Yes
Sustained write 530 MB/s -
Cost / TBW $0.388 -
Price / TB $708.36 -
Buy No ES price yet No ES 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.

SEDC600M/960G

No Backblaze failure data for this model.

SNV3510-400G

No Backblaze failure data for this model.