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We recommend 240GB Mercury Electra 3G SSD 2.5-inch 9.5mm SATA 3.0Gb/s Solid-State Drive. (Mfr P/N: OWCSSDEX3G240) from Other World Computing for $152.99 as a suitable alternative.

OWC Mercury EXTREME Pro 3G SSD 240GB SATA 3.0Gb/s Solid State Drive

Mercury EXTREME™ Pro 3G SSD 240GB
SATA 3.0Gb/s Solid State Drive

High-Performance Storage for Notebook and Desktop Computers.

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 Mercury EXTREME Pro SSD.

  • Get maximum mobile performance and battery life from your notebook.
  • Turn your Mac Pro or PC desktop into an EXTREME performance single drive.

The Mercury EXTREME Pro 3G 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 a high performance SandForce Driven™ processor with DuraClass™ technology to deliver the highest transfer speed, endurance, performance, and power efficiency available today.

With sustained read and write times over 260MB/s, up to 100X greater data protection than enterprise class HD's, and RAISE™ technology for RAID like data protection and reliability, the OWC Mercury EXTREME Pro 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.

Adding to...
a Mac Pro HDD bay?
Adding to...
a 5.25" optical bay?
Adding to...
a laptop optical bay?

Use the OWC Mount Pro 2.5" to 3.5" SATA / SSD HDD Converter Tray!

Use the OWC Multi-Mount Hard Drive adapter brackets!

Use the OWC Data Doubler Optical Bay Hard Drive/SSD Mounting Solution!

No Risk, No Hassle 30-Day Money Back Guarantee.
For more information on OWC return policies, click here.

One of the Fastest 3G drives on the market...and Built in the USA!
Benchmark Proven Performance
We compared our 100GB OWC Mercury EXTREME Pro 3G SSD against industry leading SSD's from Intel and Crucial. All drives tested in a Mac Pro 2.93GHz Quad-Core with 8GB of RAM.
Faster times are better.


High Performance Internal Storage
Replace your conventional hard drive with a reliable solid state drive. Unlike traditional hard disk drives, OWC solid state drives have no moving parts, resulting in a quiet, cool, highly rugged storage solution that also offers faster system responsiveness.

Better by Design
"Mean Time To Failure"—We all know that nothing lasts forever. But that doesn't mean you shouldn't get the most out of your investment. OWC SSD with Durawrite™ Technology, optimizes writes to the flash memory over conventional controllers increasing the overall endurance and reliability of the complete SSD. Highly intelligent block management and wear leveling also extends the overall endurance. With this technology, even MLC-based SSDs can operate for years in demanding use applications without daily write restrictions. This adds up to a MTTF that is higher than most enterprise class hard drives and SSDs on the market today.

Additionally, as there are no volatile memory elements in this storage device, the need for cache is completely negated. The drive is just that fast from the get-go!

Mercury EXTREME Pro Class SSD Awards & Reviews
MacLife Great
"Power users can rejoice at the speed and performance increase this SSD delivers." - Florence Ion, MacLife

Technical Specifications
Controller SandForce Processor with full SF1200 Series 7% Over Provisioning firmware set.
For the latest firmware update click here.
SMART attributes Standard
Capacity 240GB* useable capacity
  • Total Flash Memory Components - 256GB
  • 16GB allocated to real-time data redundancy & error correction
  • *1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.

    Sustained Sequential Read: up to 285MB/s
    Sustained Sequential Write: up to 275MB/s

    I/O Per Second (IOPS)** Random 4KB: Up to 50,000 IOPS
    ** Specifications provided by SandForce.
    NAND Flash Components Tier 1/Grade A 25nm Multi-Level Cell (MLC) NAND Flash Memory
    Read Latency less than 0.1ms
    Write Latency less than 0.1ms
    Reliability 2,000,000 hours Mean Time To Failure (MTTF)
    (based on SandForce processor operation)
    Interface SATA I (1.5Gb/s) and SATA II (3.0Gb/s) supported, SATA 2.6 Compliant
  • Native Command Queuing up to 32 commands
  • SMART Command Transport
  • TRIM Support Advanced TRIM Support in Windows 7
    Operating Environment Temperature

    0°C to +70°C

    Non-Operating Environment Temperature -55°C to +150°C
    Power Consumption Active: 2200mW (2.2W) Typical, up to 2500mW (2.5W)
    Inactive (DIPM): 90mW (.09W) Typical
    Protection ECC Recovery: Up to 24 bytes correctable per 512-byte sector
    Unrecoverable Read Errors: Less than 1 sector per 1016 bits read
    Security Chip Based Data Encryption: 128-bit AES-compliant
    RoHS Compliant Yes
    Format Unformatted. For instructions on formatting click here.
    Form Factor, Weight and Dimensions

    2.5" Industry Standard Hard Drive Form Factor
    Weight: 80 grams +/- 2 grams
    Drive Dimensions: 100.12mm x 70.06mm x 9.45mm

    Warranty: 3 Year OWC Warranty