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WD Black SN770 2TB · with heatsink — PCIe 4.0 · 5150/4900 MB/s · 2TB
Western Digital

WD Black SN770 2TB · with heatsink

PCIe 4.0 · 5150/4900 MB/s · 2TB

86
/ 100
From $200
VS
Samsung 990 Pro 4TB — PCIe 4.0 · 7450/6900 MB/s · 4TB
Samsung

Samsung 990 Pro 4TB

PCIe 4.0 · 7450/6900 MB/s · 4TB

86
/ 100
From $360
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, WD Black SN770 2TB · with heatsink lands at 86 and Samsung 990 Pro 4TB at 86. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick WD Black SN770 2TB · with heatsink if…

  • ✓M.2 NVMe
  • ✓Competitive per-GB cost
  • ✓TBW scales with capacity

Pick Samsung 990 Pro 4TB if…

  • ✓M.2 NVMe
  • ✓Competitive per-GB cost
  • ✓TBW scales with capacity
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Endurance & reliability

Tie

Write endurance and long-term dependability

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

WD Black SN770 2TB · with heatsink

Specdex score per dollar at MSRP

WD Black SN770 2TB · with heatsink more score per dollar ($200 vs $360).

WD Black SN770 2TB · with heatsink 86
vs
86 Samsung 990 Pro 4TB

Score breakdown

WD Black SN770 2TB · with heatsink
86
read 90
write 88
endurance 88
value 84
Samsung 990 Pro 4TB
86
read 90
write 88
endurance 88
value 84

Specs side-by-side

WD Black SN770 2TB · with heatsink versus Samsung 990 Pro 4TB — full spec comparison
Spec WD Black SN770 2TB · with heatsink Samsung 990 Pro 4TB
Interface
PCIe 4.0
PCIe 4.0
Capacity
2TB
▲ 4TB
Read/Write
5150/4900 MB/s
7450/6900 MB/s

WD Black SN770 2TB · with heatsink

Pros
  • +M.2 NVMe
  • +Competitive per-GB cost
  • +TBW scales with capacity
Cons
  • −Thermals on Gen 5 drives
  • −DRAM-less models slower under sustained load
  • −Require heatsinks in many systems

Samsung 990 Pro 4TB

Pros
  • +M.2 NVMe
  • +Competitive per-GB cost
  • +TBW scales with capacity
Cons
  • −Thermals on Gen 5 drives
  • −DRAM-less models slower under sustained load
  • −Require heatsinks in many systems

FAQ: WD Black SN770 2TB · with heatsink vs Samsung 990 Pro 4TB

Which is better, WD Black SN770 2TB · with heatsink or Samsung 990 Pro 4TB? +

Both score 86 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is WD Black SN770 2TB · with heatsink worth the price? +

At $200, WD Black SN770 2TB · with heatsink delivers a Specdex score of 86 — strongest in read.

Is Samsung 990 Pro 4TB worth the price? +

At $360, Samsung 990 Pro 4TB delivers a Specdex score of 86 — strongest in read.

Does WD Black SN770 2TB · with heatsink or Samsung 990 Pro 4TB last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is the better value, WD Black SN770 2TB · with heatsink or Samsung 990 Pro 4TB? +

WD Black SN770 2TB · with heatsink — more score per dollar ($200 vs $360). Specdex score per dollar at MSRP.