Verdict

These are comparable SSDs. The WDS400T1R0C 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.

SKC3000D/4096G
Kingston KC3000 · 4TB · Desktop
£656 (£164.10/TB)
WDS400T1R0C
WD Red SN700 · 4TB · NAS
£750 (£187.41/TB)

Value at a glance

Price / TB
SKC3000D/4096G $172.26
WDS400T1R0C $237.20
Endurance (TBW)
SKC3000D/4096G 3,200 TB
WDS400T1R0C 5,100 TB

Price history

UK · cheapest per day

SKC3000D/4096G £656 WDS400T1R0C £750
zoomed · drag to zoom
£1,038 £635 £231 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Nov 2026
SKC3000D/4096G WDS400T1R0C
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 3,200 TB 5,100 TB
DWPD - 0.7
DRAM cache Yes Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.215 $0.186
Price / TB $172.26 $237.20
Buy
£656
View at Amazon →
£750
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.

SKC3000D/4096G

No Backblaze failure data for this model.

WDS400T1R0C

No Backblaze failure data for this model.