New SSD in MBP

Discussion in 'MacBook Pro' started by dazed, Feb 5, 2012.

  1. dazed macrumors 6502a

    Joined:
    Jun 23, 2007
    #1
    Hi,

    I have a MBP (5,5) which has an OWC Mercury Extreme Pro ssd drive.

    Im going to install lion so I want to buy a new drive for that, and keep my existing drive as a backup until I know all is well, and then put that in the wifes MB

    Ive been looking at OWC website and can only see an Electra model. Would this be comparable in speed to my existing one ? Any downsides of this drive over what I have already ? Im very happy with the drive I have :)


    Thanks
     
  2. drumrobot macrumors member

    Joined:
    Oct 6, 2009
    #2
    We actually have the same computer... and as it turns out, ours don't support SATA III drives, so if you have the 6G Extreme Pro, it won't seem any faster than the substantially cheaper 3G Extreme pro (even though it is). If you want to confirm this, open System Profiler (via About this Mac>More Info) and click Serial-ATA. It should say "3 Gigabit" for the Link and Negotiated Link speeds. If it's higher than this, you must have mistyped your model number, and you can indeed use the SATA III drives. Now, then...
    The Electra is in the middle in terms of both speed and price, but again, there's no point in getting it vs. the 3G (see above for 'disclaimer').
     
  3. dazed thread starter macrumors 6502a

    Joined:
    Jun 23, 2007
    #3
    Mine is the 3G Extreme Pro (not sure if 6G was even out when I bought it).

    Is the Electra below my existing drive ?

    Thanks
     
  4. bdodds1985 macrumors 6502a

    bdodds1985

    Joined:
    Jul 18, 2011
    Location:
    Tartarus
    #4
    look at the read/write speeds of the drive, they should be on OWC or you can google it. Newegg will offer you cheaper and faster drives. My suggestion, The samsung or an Intel.
     
  5. dazed thread starter macrumors 6502a

    Joined:
    Jun 23, 2007
    #5
    The specs never tell the whole story and so i don't usually trust them.

    Real World scenarios and experiences are better.
     
  6. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #6
    They will be more or less the same when in used in your computer.

    ~~~
    However let's assume you have a computer that supported SATA III (which you don't have).

    3G = SATA II (3Gbps) interface maxes out at around 280MB/s.

    6G = SATA III (6Gbps) interface maxes out at around 530MB/s.

    The Electra 6G is a step down below the Extreme 6G, but in most scenarios is still faster than the Extreme 3G.
    ~~~

    However with your model (MacBookPro5,5), if you attempt to use a SATA III (6Gbps) SSD, you'll actually be linked at SATA I (1.5Gbps) speeds (that's slower than 3Gbps), so your current choice is the best for your computer.

     
  7. bdodds1985 macrumors 6502a

    bdodds1985

    Joined:
    Jul 18, 2011
    Location:
    Tartarus
    #7
    real world scenarios = owc is over priced.
     

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