Head to head

Western Digital WD Black SN7100 2 TB vs Samsung 990 EVO Plus 4TB US

Our pick

Western Digital WD Black SN7100 2 TB

M.2 NVMe SSDs

Why this one

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

Read the review

Product photographs. Not to scale.

What Samsung 990 EVO Plus 4TB US offers

The Samsung 990 EVO Plus 4TB gives a compatible M.2 2280 NVMe system 4TB for files and applications. Match its PCIe 4.0 ×4 or 5.0 ×2 connection to your host; both generation and lane count matter.³

What differs

Specification	Western Digital WD Black SN7100 2 TB	Samsung 990 EVO Plus 4TB US
Capacity	2,000 GB¹	4,000 GB³
PCIe generation	Gen4¹	PCIe® 4.0 x4 / 5.0 x2 NVMe™ 2.0³

More details

Specification	Western Digital WD Black SN7100 2 TB	Samsung 990 EVO Plus 4TB US
Sequential read speed	7,250 MB/s¹	Not published
Endurance	1,200 TB²	2,400 TB (Test method: JESD218 Standards)³
Sequential write speed	6,900 MB/s¹	Not published
Flash cell type	Tlc¹	Tlc³
Random read	1,000,000 IOPS¹	Not published
DRAM cache	No¹	Not published
Warranty	5 years¹	5 years (Workload: Stated time period or TBW, whichever comes first)³
Hardware encryption	Not published	Yes³
M.2 form factor	M.2 2280¹	M.2 (2280)³