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OWC 6G Solid State Drives

Make your Mac or PC faster in a flash!

Fully SATA Compatible
3 / 5 Year Warranty
Over 500 MB/s Read/Write
30-Day Money Back Guarantee
Mercury Electra 6G
Mercury EXTREME Pro 6G
Typical User
Prosumer to Creative Professionals
Business Users
Home Users
Typical User
Creative Pros
A/V Production
Performance Enthusiasts
Primary Use: Personal Computing, SOHO, Gaming, Graphic Design, and Video Editing
Primary Use: Performance Enthusiasts and A/V Production Professionals
Personal Computing
Light Video
Video Editing
Pro Video
Basic Design
Business Graphics
Graphic Design
High-Res Layouts
Print Design
Desktops, Laptops1 and Enclosures2
Sustained Performance Capable
Read: 537MB/s
Write: 495MB/s
Peak Data Rates
Read: 537MB/s
Write: 517MB/s
Sustained Data Performance
500MB/s Sustained Over Entire Drive
Small Arrays
Good Speed
Large Arrays
High Speed
3 Year
5 Year
Compatible with macOS, Windows, and Linux
Use with Blackmagic, Atomos, Sound Devices

Peak data rates based on OWC lab benchmark testing.
Actual performance may vary based on individual system parameters.


Manufacturer Certified, Professionally Trusted.

Mercury Extreme Pro is certified by the leading manufacturers across the audio, video and design industries for use in pro-grade equipment when performance and reliability are critical.
Hard Drive
Your hard drive is holding you back.
Hard drives don't even come close to providing the speed and performance benefits of an OWC SSD.
Look at the comparison below!
HD vs SSD Chart
92x faster than hard drive
Replace your conventional hard drive with a reliable solid state drive. Unlike traditional hard drives, OWC SSDs have no moving parts, resulting in a quiet, cool, highly rugged storage solution with faster system responsiveness.
The OWC SSD Difference.
OWC SSDs feature an industry-leading suite of controller technologies to ensure reliability and performance long into the future.
  • 'Active recycling' manages active and free space, gradually refreshing data across the SSD over time to protect against errors.
  • Advanced hardware error correction (ECC) provides RAID-like data protection and reliability without loss of transfer speed.
  • 7% over-provisioning maximizes read and write performance to greatly extend the endurance and overall reliability.
  • Up to 100X greater data protection than the highest rated enterprise class conventional hard disk drive (HDD) provides.
  • Wear leveling technologies automatically distribute data evenly and manage program/erase counts to maximize SSD lifespan.
  • Advanced security protocols with 128/256-bit AES and TCG Opal compliance.
  • Best-in-class power consumption.
Alien Babel Tech "...a superb drive for the enthusiast who demands a blazing-fast SSD without compromise ...highly recommended..." – Mark Poppin, AlienBabelTech
– Extreme Pro 6G 240GB
The SSD Review "Editors Choice without a second thought! Great job OWC!" – Les Tokar, The SSD BareFeats "The OWC 6G SSD is the fastest SSD we have tested to date..." – Rob-Art Morgan, MacPerformanceGuide "These are never-before-seen single-drive speeds- awesome!..." – Lloyd Chambers, MacPerformanceGuide
TweakTown "Performance higher than you can dream about." – Chris Ramseyer, TweakTown Storage Review "Performs Like An Angry Beast - Cranks Out Chart Topping Scores Throughout Testing." – Kevin O'Brien, Storage The SSD Review "The OWC Mercury Extreme Pro 6G 240GB SSD receives our Editors Choice Award as a result of performance and the value they place in their clientbase." – Les Tokar, The SSD Review - 6G 240GB MacTrast "OWC's new line of SSD's truly shocks and impresses me. Extremely fast, performs well... will simply knock your socks off" – J.Glenn Kunzler, MacTrast - 6G 120GB
TT Best Performance "An exceptional product with class leading performance" – Chris Ramseyer, TweakTown - 6G 240GB La mela di Jobs "...represents the cutting edge of this technology" – La mela di Jobs - 6G 240GB The SSD Review " of the best available for both the PC and Mac user... you simply can't go wrong!" – Les Tokar, The SSD Review - 6G 240GB Tech Reaction "Performance is off the charts... beats anything else we've tested to date" – Rich Smith, TechREACTION - Extreme Pro 120GB
Legit Reviews "...posted the best single drive read score we've seen to date of 559.24 MB/s which is dead on the specification given by OWC..." – Legit Reviews, Joe Evans - 6G 120GB Legit Reviews "...the best overall performing SATA III drive we have tested to date. The bar is set - who will step up next?" – Legit Reviews, Joe Evans - 6G 240GB CRN "...performance of the Mercury Extreme Pro 6G was outstanding." – Edward J. Correia, CRN - 6G 240GB LAFCPUG "After two weeks of testing, we were impressed…performance numbers are clearly off the charts... worth every penny" – David Saraceno, Los Angeles Final Cut Pro Users Group 6G 240GB
MacTrast "I cannot help but award the Mercury Electra 6G a full 5 out of 5 stars. ...very affordable, is incredibly robust, and offers an unmatched level of performance and reliability for the money" – J. Glenn Kunzler, MacTrast – Electra 6G 240GB The SSD Review Editors Choice "...exemplary performance... one rock solid SSD" – Les Tokar, The SSD Review - Electra 6G 240GB Hardware Secrets "The overall winner, coming out on top in three out of the four tests." – Henry Butt, Hardware Secrets - Extreme Pro 6G 240GB Pure Overclock Editors Choice "...lightning quick speeds...puts up some outstanding results across the board...posts speeds that are among the fastest we've seen." – Jake Mete, Pure Overclock - Extreme Pro 6G 240GB
MAXimum PC KICK ASS "OWC's Mercury Extreme Pro 6G ... goes toe to toe with the Vertex 3 in nearly every benchmark, and exceeds it in some ... we don't hesitate to recommend it." – Nathan Edwards, Maximum PC - Extreme Pro 6G Benchmark Reviews Golden Tach Award "...a worthwhile buy for both notebook and desktop computer users, and helps earn our Golden Tachometer Award." – Olin Coles, Benchmark Reviews - Extreme Pro 6G 120GB Storage Review "Given all "extras" (... 30-day return policy, the feel-good US assembly and a solid reputation ...) we can easily recommend the Electra for mainstream SSD buyers who want great performance." – Kevin O'Brien, Storage Review - Electra 240GB CRN "Impressive... For its outstanding sustained read/write performance and reasonable prices... a recommended product" – Eddie Correla, CRN - Electra 6G 240GB
The Storage Review "The newly updated OWC Mercury Extreme Pro 6G offers faster speeds... with no increase in cost... while still keeping the great five-year warranty." – Kevin O'Brien, - Extreme Pro 6G MacNN 4.5 Stars "...a practical storage choice... money...well spent" – Justin King, MacNN - Mercury Electra 6G 240GB TweakTown Best " damn fast ... the performance is unmatched ..." – Chris Ramseyer, TweakTown - Mercury Extreme Pro 6G 240GB Diglloyd " and reliable...the only solid state drives that I recommend, pay for, and use myself." – Lloyd Chambers, DigLloyd - Mercury Extreme Pro 6G
Photo this and that "I'm extremely impressed with this upgrade... Completely recommend the SSD path to anyone for whom time is precious!" – Edmond Terakopian, Photo This & That - Electra 6G 120GB Icrontic Approval "...a worthwhile upgrade for your Mac... a huge improvement over a mechanical hard drive." – Nick Mertes, Icrontic - Electra 6G 240GB Illustrator "I couldn't believe the speed increase with the extra RAM and solid state drive! ... The videos were invaluable... to upgrade the drive." – Heath McKnight, Illustrator - Extreme Pro 6G 240GB Bjorn 3D Gold "...incredible speed... excellent performance... we can highly recommend the Mercury EXTREME Pro 6G" – Peter Kapas, - Extreme Pro 6G 240GB
Best of 2011 TUAW "Quiet, cool, and rugged drives ... provide performance that no hard disk drive can match." – Steve Sande, TUAW Circuit Remix "If you want good can't go wrong with OWC's Mercury Electra 6G." – Brandon Hum, circuitREMIX - Mercury Electra 6G CircuitREMIX Gotta Get One Award "...the magnitude of the performance gain with the SSD is huge." – Brandon Hum, circuitREMIX - Mercury Electra 6G 240GB PureOverclock "...impressive... a great value for a top tier drive like this...a top pick." – Jonathan Coulter, - Mercury Extreme Pro 6G 240GB
Circuit Remix "...the best Mac oriented support options for its users, and their range of SSDs cover up to the highest range of performance." – Brandon Hum, circuitREMIX - Mercury Electra 6G 240GB Network World "...out-performed all...drives..." – Tom Henderson, Network World - Mercury Extreme Pro 6G 240 GB Think Computers "One of the fastest drives we have tested... performed great...we were very impressed." – Bob Buskirk, Think Computers - 240GB 6G iShootShows "The OWC Mercury Extreme 6G Pro SSD is five pieces of perfectly cooked bacon to your existing computer sandwich." – Todd Owyoung, - 6G 240GB
Pure Overclock "One of the best values for the performance we have seen in any SSD to date." – Jonathan Coulter, Pure - Electra 6G 240GB The SSD Review "No matter what we do to this SSD, it seems to continue to deliver sustainable, predictable performance within its drive states." – Paul Alcorn, The SSD Review - Enterprise Pro 6G Computer Power User "...wickedly fast... the best kept secret in solid-state storage..." – Vince Cogley, Computer Power User - Mercury Extreme Pro 6G 240GB HwMaster v2 "...extreme performance..." – Eduardo Rocco Baptist, HwMaster v2 - Extreme Pro 6G 240GB
TechREACTION Gold "...a top tier performance SSD...chart topping capabilities..." – TechREACTION - Extreme Pro 6G Logic Lounge "...outstanding... packs a punch when it comes to capacity and speed." – Craighton Miller, LogicLounge - Extreme Pro 6G MyMac "MyMac recommends all OWC On-The-Go external bus-powered drives... conversation pieces and workhorses for eleven years. That's an impressive lifespan for an external hard drive." – John Nemerovski, - On-The-Go Pro 240GB SSD Triple Interface & On-The-Go Pro 500GB SSD Triple Interface Examiner "...a top performing drive with a kick that won't disappoint anyone..." – Hassan Al-Zahrani, - Extreme Pro 6G
  1. Use of a 2.5-inch SSD in a 3.5-inch drive bay requires an adapter bracket such as the NewerTech AdaptaDrive.
  2. Use of any SSD in an external enclosure is dependent on the power available from the enclosure. OWC Mercury Electra 6G and Mercury Extreme Pro 6G SSDs are engineered for use in any OWC Enclosure that supports 2.5-inch SSDs.
Mercury Electra and Mercury Extreme are trademarks of New Concepts Development Corporation, registered in the U.S. Patent and Trademark Office. AdaptaDrive is a trademark of Newer Technology, Inc., registered in the U.S. Patent and Trademark Office. Mac is a trademark of Apple Inc., registered in the U.S. and other countries. SandForce, SandForce DuraClass and SandForce RAISE are trademarks of LSI Corporation in the U.S. and/or other countries. Other marks may be the trademark or registered trademark property of their owners.