Western Digital WD Black SN850X

Western Digital WD Black SN850X

Western Digital
99 Overall Score
vs
Samsung 990 PRO

Samsung 990 PRO

Samsung
95 Overall Score

What Buyers Say

Western Digital WD Black SN850X

92 out of 100 medium confidence 17 reviews

The WD Black SN850X is highly praised for its blazing speed, reliability, and value, often compared favorably to pricier alternatives like Samsung and Solidigm. Users report excellent performance in gaming (especially PS5) and general use, with a few concerns about potential issues mitigated by firmware updates. Overall, it's seen as a top-tier NVMe drive, especially when on sale.

Pros
  • Blazing fast speeds
  • Excellent value for money
  • Reliable high-capacity storage
  • Great for PS5
  • Easy installation
Cons
  • Potential firmware issues
  • No heatsink included
  • Pricey when not on sale
👍 Speed 6
👍 Value for money 4
👍 Reliability 4
👍 Ps5 compatibility 3
👎 Firmware concerns 2
👍 Installation 2

Samsung 990 PRO

No customer feedback yet

Scores

Budget
Western Digital
96
Samsung
97
Console
Western Digital
95
Samsung
96
Gaming
Western Digital
95
Samsung
96
Workstation
Western Digital
94
Samsung
94
Laptop
Western Digital
82
Samsung
83
Portable
Western Digital
25
Samsung
26

Specifications

Western Digital WD Black SN850XSamsung 990 PRO
Drive
Capacity
4,000
4,000
Form FactorM.2 2280M.2 2280
InterfacePCIe 4.0 x4PCIe 4.0 x4
ProtocolNVMeNVMe
PCIe Generation44
External✗✗
Performance
Sequential Read (MB/s)
7,300
7,450
Sequential Write (MB/s)
6,600
6,900
Random Read (IOPS)
1,200,000
1,400,000
Random Write (IOPS)
1,100,000
1,550,000
Hardware
NANDTLCTLC
DRAM Cache✓✓
Controller—Samsung
Reliability
Endurance (TBW)
2,400
2,400
MTBF (hours)
1,750,000
1,500,000
Warranty (years)3★1
Features
Heatsink✓✓
Hardware Encryption—✓★

Pros & Cons

Western Digital WD Black SN850X

  • Strong social proof (96th percentile)96th %ile
  • Strong random (95th percentile)95th %ile
  • Strong user sentiment (95th percentile)95th %ile
  • Strong feature (94th percentile)94th %ile

Samsung 990 PRO

  • Strong feature (99th percentile)99th %ile
  • Strong random (97th percentile)97th %ile
  • Strong speed (93rd percentile)93rd %ile
  • Strong capacity (93rd percentile)93rd %ile

Verdict

★ Winner: Western Digital WD Black SN850X

Scores 99 overall, wins 0 of 6 usage categories and 2 of 18 specs.