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My OWC Mercury Extreme Pro 6G SSD 480 GB is now installed

I just installed my OWC Mercury Extreme Pro 6G SSD 480 GB n my Macbook Pro and it is working like a charm. It gives me more disk space and it seems very fast. I do not know if OWC SSD is faster than my Intel 520 but it is definitely not slower.
The OWC Mercury Extreme Pro 6G SSD 480 GB is not cheap. I paid almost 480 euro + VAT so what do you get when you buy a SSD at that price?

  • You get a SSD with 5 year warranty (This is great)
  • A SSD that is targeted IT professionals
  • A SSD that delivers great performance (550 MB/s read and 520 MB/s write at the top)
  • A SSD with RAID support

The whole process of cloning, replacing and booting with a new SSD has become a task that I have done so many times over the years. Not just at home but also at work. A few months ago I replaced an old WD hard disk with a 480 GB Intel 520 SSD in my 27 inch iMac 2009 and voila you got what feels like a brand new computer. I simply just love Solid State Drives. Even an old iMac with SSD becomes a beast when it comes to demanding operations when playing around with software development. I/O is pure pleasure.

Cloning my Intel 520 180 GB

Before I can use the new OWC SSD I will have to clone the data from my existing Intel SSD onto my OWC disk. In order to clone the data I use my old but very useful hard disk docking station from Sandberg that mounts the disk as an external disk and then I am ready to clone data.

I use Carbon Copy Cloner which is great piece of software that will backup your data. Carbon Copy Cloner is one of the key tool in my software backup process. Always have a good backup strategy when it comes to your precious data.
Cloning 160 GB data from one SSD to another SSD took about 2 hours which is OK considering that the my hard disk docking station is using USB 2.0.

Installing the OWC SSD

Replacing my Intel 520 SSD with the OWC Mercury Extreme Pro 6G SSD 480 GB in MacBook Pro is easy as long as you got the right tools.
I use the Newertech 11-Piece Portable Toolkit which is perfect for almost every hardware upgrade. With Torx and Philips screw drivers, tweezers, scissor clamp and much more you are good to go. Very recommendable toolkit.

Unscrew all the screws on the back of the MacBook Pro with a small Philips screw driver, remove the aluminum plate on the back, replace the old SSD with the new SSD and screw the plate back on again.

Testing the OWC Mercury Extreme

After the SSD replacement we are ready to boot the MacBook Pro and if all goes well we are ready to use the MacBook again after a short while and get back to work.
The first test is to see if you MacBook starts after the SSD install process. Hopefully all goes well. Next I use to run Disk Speed Test which is a free tool that can be downloaded via Apple Mac App Store. It will test the read and write operations on your SSD.
With an average write of 250 MB/s and an average read of 505 MB/s on compressed data I am very pleased. Good performance.
I would strongly recommend some of the videos that can be seen on macsales that compare SSD with traditional mechanical hard drives. You will be amazed.

Where to buy an OWC Solid State Disk online

There are several places where you can s Solid State Disk from OWC online. If you live in the US I will recommend that you buy directly from If you live in Europe I will recommend

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