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OWC Mercury Electra MAX 3G 960GB 2.5-inch SSD SATA 2.0 3Gbp/s Async SF2181 (1024GB total MLC Flash with 7% Over Provisioned Redundancy) / Mfr. No.: OWCSSDEX3G960

OWC Mercury Electra MAX 3G 960GB 2.5-inch SSD SATA 2.0 3Gbp/s Async SF2181 (1024GB total MLC Flash with 7% Over Provisioned Redundancy) / Mfr. No.: OWCSSDEX3G960
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Item Number: owc-owcssdex3g960
Vendor Number: OWCSSDEX3G960
Vendor: OWC
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When you need the highest levels of capacity and speed, the Electra MAX 960GB SSD is the pro user's choice. Built for demanding everyday real-world uses, this big, fast SSD delivers the performance you can count on.

The Mercury SSD line features industry leading SandForce DuraClass Technologies:

  • 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 drive life.

This internal 2.5" SATA SSD uses the latest SandForce 2181 Processor and DuraClass technology to deliver the highest transfer speed, endurance, and performance available today.

With sustained reads up to 254MB/s and writes up to 250MB/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 960GB Mercury Electra MAX 3G SSD line delivers unbeatable performance that's designed and built in the U.S. from domestic and imported parts and backed by a three year warranty.


  • One of the fastest Internal SATA 2.5"
  • SSDs available...and Built in the USA!
  • Ultra-efficient Block Management & Wear Leveling for unparalleled reliability & performance.
  • 3 year OWC warranty

This OWC SSD Model is compatible with nearly any Mac or PC model with a Serial ATA connection (SATA, SATA 2.0, or SATA 3.0) including:

  • 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

960GB Mercury Electra MAX 3G SSD Specifications:


2x SandForce 2181 Series Processor with 7% Over Provisioning
Tier 1 Asynchronous MLC NAND Flash Memory
RAID Controller
Silicon Image SteelVine Sil5923CNU
Form Factor
Standard 9.5mm 2.5"
SATA 3Gb/s
960GB useable capacity
Total Flash Memory Components – 1024GB
64GB allocated to real-time data redundancy & error correction
Formatted Capacity
RAID Support
Qualified for single drive and multiple drive production workstation RAID 0/1/10/0+1 and SPAN usage.

SMART Attributes
Native Command Queuing
up to 32 commands
Manufacturer Model Number
RoHS Compliant


Height (max)
9.45mm (0.372″)
Width (max)
70.06mm (2.758″)
Length (max)
100.12mm (3.941″)
104 grams
0.231 lbs +/- 3.7 oz


Data Reliability
ECC Recovery: Up to 55 bytes correctable per 512-byte sector
Chip Based Data Encryption: 128-bit AES-compliant
Nonrecoverable Read Errors
Less than 1 sector per 10bits read

Warranty - 3 Year 


Reads (up to)
Writes (up to)
Read Incompressible
Data Rate (up to)
Write Incompressible
Data Rate (up to)
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


Idle (Typical)
0.0 bels
Seek (Typical)
0.0 bels

External Drive Usage

Supported for use in external enclosures that utilize a power source independent from the interface bus. 

Not supported or recommended for use in external, bus-powered enclosures. 

Dual bay units such as the Mercury Elite Dual Mini and the Guardian Maximus Mini do NOT support two of 960GB Mercury Electra MAX SSDs simultaneously, even when utilizing a power supply.
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