WD Black SN850X 2TB NVMe SSD vs WD My Passport Portable SSD 2TB

WD Black SN850X 2TB NVMe SSD wins — The WD Black SN850X outperforms the My Passport in virtually every performance metric, delivering up to 7,300 MB/s seque…

Scores: WD Black SN850X 2TB NVMe SSD 8/10 · WD My Passport Portable SSD 2TB 6.5/10

The WD Black SN850X outperforms the My Passport in virtually every performance metric, delivering up to 7,300 MB/s sequential reads (per Tom's Hardware) and maintaining sub‑70 °C temps under load (per PCMag). However, the My Passport’s portable form factor and USB‑C plug‑and‑play convenience make it a better fit for users who prioritize mobility over raw speed. For a desktop workstation or gami...

Spec-by-spec comparison

WD Black SN850X 2TB NVMe SSDWD My Passport Portable SSD 2TB
Form FactorM.2 22802.5" Enclosed
InterfacePCIe 4.0 x4 NVMeUSB 3.2 Gen 2 (10 Gbps)
Capacity2TB2TB
Sequential Read7,300 MB/s1,050 MB/s

WD Black SN850X 2TB NVMe SSD

What works

  • Up to 7,300 MB/s read (per Tom's Hardware)
  • Thermal‑guard controller keeps temps under 70 °C under sustained load (per PCMag)
  • Five‑year limited warranty

What doesn't

  • Higher price per GB than SATA SSDs
  • Requires M.2 slot with PCIe 4.0 support

WD My Passport Portable SSD 2TB

What works

  • Compact, shock‑resistant aluminum case (per PCMag)
  • Plug‑and‑play USB‑C connectivity

What doesn't

  • Read speed limited to ~1 GB/s
  • No hardware encryption on base model

Bottom line

Our pick: WD Black SN850X 2TB NVMe SSD.

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