Verdict

These are closely matched SSDs of the same capacity - decide on price and warranty. Check the live $/TB above.

MZ-V9P4T0
Samsung 990 PRO · 4TB · Desktop
$800 ($199.98/TB)
MZ-VAP4T0BW
Samsung 9100 PRO · 4TB · Desktop
$981 ($245.34/TB)

Value at a glance

Price / TB
MZ-V9P4T0 $192.39
MZ-VAP4T0BW $245.34
Endurance (TBW)
MZ-V9P4T0 2,400 TB
MZ-VAP4T0BW 2,400 TB

Price history

US · cheapest per day

MZ-V9P4T0 $800 MZ-VAP4T0BW $981
zoomed · drag to zoom
$1,129 $699 $269 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Nov 2026
MZ-V9P4T0 MZ-VAP4T0BW
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 2,400 TB 2,400 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.321 $0.409
Price / TB $192.39 $245.34
Buy
$800
View at Amazon →
$981
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.

MZ-V9P4T0

No Backblaze failure data for this model.

MZ-VAP4T0BW

No Backblaze failure data for this model.