Head to head

Western Digital WD Black SN7100 2 TB vs Samsung 9100 PRO 4TB

Our pick

Western Digital WD Black SN7100 2 TB

M.2 NVMe SSDs

Choose the 2TB SN7100 for a larger file collection in a compatible M.2 2280 PCIe Gen4 slot.¹
It combines five-year warranty coverage with a 1,200TB rated write allowance; check the exact warranty terms against your expected writes.¹²

Product photographs. Not to scale.

Samsung 9100 PRO 4TB provides 4TB for files and applications in a PCIe 5.0 M.2 2280 build, with a manufacturer-rated 2,400TB write allowance.³

2 models / at a glance

Endurance · TB1,200 TB²Higher preferred ↑

Endurance · TB2,400 TB³Higher preferred ↑

Specification	Western Digital WD Black SN7100 2 TB	Samsung 9100 PRO 4TB
Capacity	2,000 GB¹	4,000 GB³
PCIe generation	Gen4¹	Gen5³
Endurance	1,200 TB²	2,400 TB³

Specification	Western Digital WD Black SN7100 2 TB	Samsung 9100 PRO 4TB
Sequential read speed	7,250 MB/s¹	Not published
Sequential write speed	6,900 MB/s¹	Not published
Flash cell type	Tlc¹	Not published
Random read	1,000,000 IOPS¹	Not published
DRAM cache	No¹	Not published
Warranty	5 years¹	5 years (Duration: Five years or 2,400TB written, whichever comes first)⁴
M.2 form factor	M.2 2280¹	M.2 (2280)³