120GB Mercury Electra 3G SSD Hard Drive


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When only the fastest and most reliable Solid State Drive on the market today will suffice for your data storage and backup, look no further than the OWC 480GB Mercury Electra 3G SSD.

This internal 2.5" SATA SSD delivers the highest transfer speed, endurance, and performance available today.

With sustained reads up to 285MB/s and writes up to 275MB/s, up to 100X greater data protection than enterprise class Hard Disk Drives, and RAISE technology for RAID like data protection and reliability, the OWC 480GB Mercury Electra 3G SSD line delivers unbeatable performance. It's designed and built in the U.S. from domestic and imported parts and backed by a 3 Year OWC SSD Limited Warranty.
High Performance Internal Storage

Replace your conventional hard drive with a reliable solid state drive. Unlike traditional hard disk drives, OWC SSDs have no moving parts, resulting in a quiet, cool, and highly rugged storage solution that also offers near instantaneous system response.

OWC OWCSSD7E3G120 Features:

  • DuraWrite™ extends the endurance of your Solid State Drive (SSD).
  • Intelligent Block Management & Wear Leveling automatically distributes data evenly across the entire SSD.
  • Intelligent Read Disturb Management spreads the active read/write across the flash components eliminating data corruption caused by constant use.
  • Intelligent "Recycling" for advanced free space management gradually re-writes data across the SSD over time to ensure data never gets corrupted.
  • RAISE™ (Redundant Array of Independent Silicon Elements) protects the data on your drive similar to having a RAID setup.
  • Best-in-Class ECC Protection for longest data retention and drivelife.

OWC OWCSSD7E3G120 Specifications:

  • Controller: SandForce 2181 Series Processor with 7% Over Provisioning
  • NAND: Tier 1 Asynchronous MLC NAND Flash Memory
  • Form Factor: Standard 7mm 2.5"
  • Interface: SATA 3Gb/s
  • Capacity:
    • 120GB useable capacity
    • Total Flash Memory Components – 128GB
    • 8GB allocated to real-time data redundancy & errorcorrection
  • Formatted Capacity: 111GiB
  • RAID Support: Qualified for single drive and multiple drive production workstation RAID 0/1/10/0+1 and SPAN usage.
  • SMART Attributes: Standard5
  • Native Command Queuing: up to 32 commands
  • Manufacturer Model Number: OWCSSDEX3G120
  • RoHS Compliant: Yes
  • Format: Unformatted


  • Height (max): 7mm (0.276")
  • Width (max): 70.06mm (2.758")
  • Length (max): 100.12mm (3.941")
  • Weight:
    • 80 grams +/- 2 grams
    • 0.176 lbs +/- 2.82 oz


  • Data Reliability: ECC Recovery: Up to 55 bytes correctable per 512-byte sector
  • Security: Chip Based Data Encryption: 128-bit AES-compliant
  • TRIM Support: OS Dependent
  • Nonrecoverable Read Errors: Less than 1 sector per 1016 bits read
  • Warranty: 3 Year OWC SSD Limited Warranty (Standard return policyapplies.)


  • Sustained Reads (up to): 285MB/s
  • Sustained Writes (up to): 275MB/s
  • Read Incompressible Data Rate (up to): 208MB/s
  • Write Incompressible Data Rate (up to): 235MB/s
  • Random 4K Read: Up to 60,000 IOPS
  • Random 4K Write: Up to 60,000 IOPS
  • Read Latency: less than 0.1ms
  • Write Latency: less than 0.1ms
  • Environmental (Operating):
    • Temperature (°F): 32°F to 158°F
    • Temperature (°C): 0°C to 70°C
  • Environmental (Non-Operating):
    • Temperature (°F): -67°F to 302°F
    • Temperature (°C): -55°C to 150°C
  • Acoustics:
    • Idle (Typical): 0.0 bels
    • Seek (Typical): 0.0 bels
  • Compatibility:
    • All Mac Pro models
    • All PowerMac G5 models
    • All MacBook Pro models
    • All Mac mini 2006-Current (All Intel Models)
    • iMac 2006-current (All Intel Models)
    • iMac G5
    • All MacBook models
    • Xserve 2009
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