Sony Tough M 128GB Memory Card vs WD Black SN850X 2TB

By Billy G. · Founder & Lead EditorVerified Jun 4 by Billy G.

Sony Tough M 128GB Memory Card
WD Black SN850X 2TB
Verified Confidence: 81%

Verdict: These products serve fundamentally different purposes with no direct overlap: the Sony Tough M is a rugged UHS-II memory card for cameras while the WD Black SN850X is a PCIe 4.0 NVMe SSD for computers. The WD delivers 26x faster reads (7300 MB/s vs 277 MB/s) and 16x the capacity (2 TB vs 128 GB) per the provided specs, but lacks the Sony's water/dust/drop/bend proofing. They are not comparable head-to-head.

Sony Tough M 128GB Memory Card lists at $133 while WD Black SN850X 2TB lists at $289 — Sony Tough M 128GB Memory Card undercuts WD Black SN850X 2TB by $156 (117%).

Winner: WD Black SN850X 2TB

Sony Tough M 128GB Memory Card: 6.5/10

WD Black SN850X 2TB: 8/10

Spec-by-spec comparison

Sony Tough M 128GB Memory CardWD Black SN850X 2TB
capacity128 GB2 TB
max_read_speed277 MB/s7300 MB/s
max_write_speed150 MB/s6600 MB/s
interfaceUHS-IIPCIe 4.0 x4

Sony Tough M 128GB Memory Card

What works

  • Water, dust, drop, and bend proof
  • UHS-II/V60 speeds suitable for 4K video recording
  • Designed for harsh outdoor environments

What doesn't

  • Only 128 GB capacity
  • Much slower than internal SSDs

WD Black SN850X 2TB

What works

  • Sequential read up to 7300 MB/s and write up to 6600 MB/s
  • Game Mode 2.0 for enhanced gaming performance
  • Large 2 TB capacity for modern games and media

What doesn't

  • Not portable or rugged like memory cards
  • Requires desktop or laptop PCIe slot

Bottom line

Our pick: WD Black SN850X 2TB.

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