Interface: LNM790X004T-RNNNU lists PCIe 4.0 x4 / NVMe; MZ-V9S4T0 lists PCIe 4.0 x4 or PCIe 5.0 x2 / NVMe 2.0.
Endurance (TBW): LNM790X004T-RNNNU lists 3000; MZ-V9S4T0 lists 2400.
Sequential read (up to MB/s): LNM790X004T-RNNNU lists 7400; MZ-V9S4T0 lists 7250.
Manufacturer limited warranty: LNM790X004T-RNNNU lists 5 years, subject to manufacturer terms; MZ-V9S4T0 lists 5 years or TBW limit, whichever comes first.
Sequential write (up to MB/s): LNM790X004T-RNNNU lists 6500; MZ-V9S4T0 lists 6300.

A larger cache, higher RPM or higher advertised sequential speed alone does not establish which drive is better for your workload.

Specifications side by side

Show differences only

Manufacturer specifications for LNM790X004T-RNNNU and MZ-V9S4T0
Specification	LNM790X004T-RNNNU	MZ-V9S4T0
Manufacturer	Lexar	Samsung
Product family	NM790	990 EVO Plus
Model number	LNM790X004T-RNNNU	MZ-V9S4T0
Capacity (TB)	4	4
Heatsink	Not included	Not recorded
Interface	PCIe 4.0 x4 / NVMe	PCIe 4.0 x4 or PCIe 5.0 x2 / NVMe 2.0
Form factor	M.2 2280	M.2 2280
Cache design	HMB 3.0 and dynamic SLC caching	Not recorded
Endurance (TBW)	3000	2400
Sequential read (up to MB/s)	7400	7250
Manufacturer limited warranty	5 years, subject to manufacturer terms	5 years or TBW limit, whichever comes first
Sequential write (up to MB/s)	6500	6300

Compatibility and buying checks

Sequential speeds are manufacturer maxima, not measured game load times. Check your PCIe generation, M.2 dimensions and cooling clearance. The lower of the time or endurance limit normally governs a limited SSD warranty.
Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.

Reviewed 2026-09-08. Published specifications; no independent benchmark or failure-rate claim.

Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.