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OWC Mercury Electra 120GB SATA III 2.5"

★★★★★ 4.6 (112)
Capacity 120GB
Form Factor 2.5"
Interface SATA III
Read Speed 500 MB/s
NAND TLC
OWC Mercury Electra 120GB SATA III 2.5" ssd
30 Overall Score

No current retailer price

Also available in:

Snapshot

Pros & Cons

Pros

  • Strong affordability (96th percentile) 96th
  • Strong social proof (77th percentile) 77th

Cons

  • Below average capacity (4th percentile)
  • Below average speed (13th percentile)
  • Below average random (22nd percentile)

What owners think

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews - so you can see whether early praise held up.

Owner sentiment has held steady over time
1★2★3★4★5★Q2 '18: 5.0★ · 1 reviewQ1 '20: 5.0★ · 1 reviewQ3 '20: 5.0★ · 2 reviewsQ4 '20: 4.0★ · 1 reviewQ2 '21: 5.0★ · 1 reviewQ2 '22: 5.0★ · 1 reviewQ1 '23: 5.0★ · 1 reviewQ3 '24: 5.0★ · 1 reviewQ1 '25: 5.0★ · 1 reviewQ4 '25: 5.0★ · 2 reviewsQ1 '26: 1.0★ · 1 review11211111121Q2 '18Q1 '20Q3 '20Q4 '20Q2 '21Q2 '22Q1 '23Q3 '24Q1 '25Q4 '25Q1 '26
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews

Based on 13 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

Performance Percentiles

Speed 12.9
Random 22.4
Feature 53.7
Capacity 4
Endurance 42.2
Social Proof 77.3
Affordability 95.8

Specifications

Full Specifications

Drive

Capacity 120
Form Factor 2.5"
Interface SATA III
Protocol SATA
External No

Performance

Sequential Read (MB/s) 500

Hardware

NAND TLC
DRAM Cache No

Reliability

Warranty (years) 3

Features

Heatsink No

vs Competition

Spec OWC Mercury Electra Western Digital Black SN850X Samsung 9100 PRO Kingston FURY Renegade G5 SFYR2S/4T0 Crucial T500 SanDisk WD_BLACK SN8100
Capacity 120GB 4TB 4TB 4TB 2TB 8TB
Form Factor 2.5" M.2 2280 M.2 2280 M.2 2280 M.2 2280 M.2 2280
Interface SATA III PCIe 4.0 x4 PCIe 5.0 x4 PCIe 5.0 x4 PCIe 4.0 x4 PCIe 5.0 x4
Seq Read 500 MB/s 7,300 MB/s 14,800 MB/s 14,800 MB/s 7,400 MB/s 14,900 MB/s
Nand Type TLC TLC TLC TLC TLC TLC
Dram Cache false true true true true true
Endurance - 2400 TBW 2400 TBW 4000 TBW 1200 TBW 4800 TBW
Compare Compare Compare Compare Compare
Product SpeedRandomFeatureCapacityEnduranceSocial ProofAffordability
OWC Mercury Electra 12.922.453.7442.277.395.8
Western Digital Black SN850X Compare 88.595.28992.5889511.5
Samsung 9100 PRO Compare 99.199.899.792.585.999.55.3
Kingston FURY Renegade G5 SFYR2S/4T0 Compare 99.498.790.592.593.486.86.5
Crucial T500 Compare 93.896.598.978.482.99520.1
SanDisk WD_BLACK SN8100 Compare 98.999.197.398.180.945.43.4

Usage Scores

Overall (29.6)Budget (61.2)Gaming (18)Laptop (22.5)Console (8.8)Portable (6.8)Workstation (25)

A full written review is coming soon. The specs, scores, prices and charts above are always up to date.

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