New
OWC Mercury Electra 120GB SATA III 2.5"
Capacity 120GB
Form Factor 2.5"
Interface SATA III
Read Speed 500 MB/s
NAND TLC
30 Overall Score
No current retailer price
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
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has held steady over time
Based on 13 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
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 | Crucial T500 | Samsung 990 EVO | SK Hynix Platinum P41 | SanDisk Optimus 5100 | ADATA Legend 860 SLEG-860-1000GCS |
|---|---|---|---|---|---|---|
| Capacity | 120GB | 1TB | 2TB | 2TB | 1TB | 2TB |
| 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 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 |
| Seq Read | 500 MB/s | 7,300 MB/s | 5,000 MB/s | 7,000 MB/s | 7,100 MB/s | 6,000 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | QLC | TLC |
| Dram Cache | false | true | false | true | - | false |
| Endurance | - | 600 TBW | 1200 TBW | 1200 TBW | 1200 TBW | 320 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | Endurance | Social Proof | Affordability |
|---|---|---|---|---|---|---|---|
| OWC Mercury Electra | 12.9 | 22.4 | 53.7 | 4 | 42.2 | 77.3 | 95.8 |
| Crucial T500 Compare | 91 | 96.3 | 98.9 | 54.9 | 82.9 | 95 | 57.6 |
| Samsung 990 EVO Compare | 72 | 90.2 | 78.8 | 78.4 | 82.9 | 95 | 56.9 |
| SK Hynix Platinum P41 Compare | 83.5 | 96.6 | 93.6 | 78.4 | 85.9 | 46.6 | 60.4 |
| SanDisk Optimus 5100 Compare | 86.5 | 95.2 | 14.6 | 54.9 | 95.2 | 86.8 | 53.8 |
| ADATA Legend 860 SLEG-860-1000GCS Compare | 77 | 61.5 | 87.2 | 78.4 | 65.4 | 77.3 | 48.8 |
Price
Value & Pricing
We started tracking prices for this product on Nov 9, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
