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BIWIN Black Opal NV7400 Gen4 SSD 1TB vs WD_BLACK SN7100 2TB NVMe SSD

Researched, not hands-on tested.How we review ›

all judged against NVMe SSDs at a similar price

The WD_BLACK SN7100 2TB NVMe SSD scores 7.0/10 overall, ahead of the BIWIN Black Opal NV7400 Gen4 SSD 1TB at 6.2/10.

The BIWIN Black Opal NV7400 Gen4 SSD 1TB leads on software.

The WD_BLACK SN7100 2TB NVMe SSD leads on performance, endurance, warranty and efficiency and thermals.

Black Opal NV7400 Gen4 SSD

BIWIN Black Opal NV7400 Gen4 SSD 1TB

6.2/10verdict: wait for deal

The Black Opal NV7400 is a PCIe 4.0 M.2 2280 drive for builders who want fast sequential speeds and a 5-year warranty. It suits gaming PCs, workstations and laptops where a single-sided drive with a bundled thermal pad is useful. It is less suited to anyone who needs steady writes under heavy sustained load or strong small random I/O.

Typically about £268.99 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

WD_BLACK SN7100 NVMe SSD, 2TB

WD_BLACK SN7100 2TB NVMe SSD

7.0/10verdict: buy

The WD_BLACK SN7100 2TB is for buyers who want a PCIe Gen 4x4 M.2 2280 drive with low power draw. It suits desktops and Windows machines where the Dashboard software is usable. Linux and macOS users, and anyone who needs a heatsink variant, should read the limitations first.

Typically about £270 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightBIWIN Black Opal NV7400 Gen4 SSD 1TBWD_BLACK SN7100 2TB NVMe SSD
Performance35%6/107/10
Endurance20%6/108/10
Warranty15%8/109/10
Efficiency and thermals15%6/107/10
Software15%5/104/10
Overall6.2/107.0/10

Specifications

SpecBIWIN Black Opal NV7400 Gen4 SSD 1TBWD_BLACK SN7100 2TB NVMe SSD
InterfacePCIe Gen4 x4, NVMe 2.0PCIe Gen 4x4 NVMe
Sequential read7400 MB/s per manufacturer spec table for 1TB; manufacturer headline and Amazon listing say up to 7450 MB/s7,250 MB/s (up to)
Sequential write6500 MB/s6,900 MB/s (up to)
Endurance (2TB)1000 TBW (1TB)1,200 TBW (2TB)
Form factorM.2 2280, single-sidedM.2 2280
Warranty5-year limited warranty with free replacement5-year limited (or Max Endurance TBW limit, whichever occurs first)

Strengths and weaknesses

BIWIN Black Opal NV7400 Gen4 SSD 1TB

  • + Rated 7400MB/s read and 6500MB/s write
  • + 5-year warranty with free replacement
  • + Single-sided M.2 2280 with graphene thermal pad
  • − DRAM-less, and writes slow once cache is exhausted
  • − Weaker small random I/O than a rival
  • − Reliability reports mixed and anecdotal

Skip it if:

  • Buyers who need steady write speed under long sustained loads
  • Anyone whose workload leans on small random I/O
  • Buyers who need documented firmware update tooling
Read the full BIWIN Black Opal NV7400 Gen4 SSD 1TB review ›

WD_BLACK SN7100 2TB NVMe SSD

  • + Rated 7,250 MB/s read and 6,900 MB/s write
  • + 1,200 TBW and a five-year warranty
  • + Low measured power draw during transfers
  • − Dashboard software is Windows-only
  • − No heatsink variant listed
  • − Owner complaints about laptop idle power and ASPM

Skip it if:

  • Linux or macOS users who want manufacturer health-monitoring software
  • Buyers who want a drive with a factory-fitted heatsink
  • Laptop owners who prioritise the lowest possible idle power
Read the full WD_BLACK SN7100 2TB NVMe SSD review ›

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