Slow SSD speeds?

Discussion in 'MacBook' started by drnebulous, Aug 6, 2014.

  1. drnebulous macrumors regular

    drnebulous

    Joined:
    Apr 27, 2014
    Location:
    Salford, UK
    #1
    I have checked my SSD, and it's only getting to about 105mb/s write speed and 150mb/s read speed. It should be about 450MB/s.

    SSD: Kingston SSD Now V300
    Macbook Pro: MacBookPro9,2, 13-inch, Mid 2012, 2.9 GHz Intel Core i7, 8 GB 1600 MHz DDR3, Intel HD Graphics 4000, OS X 10.9.4 (13E28).


    What is the problem? I thought that this computer has full SATA III?


    It also has a secondary hard drive in the optical drive bay, if that makes any difference - Western Digital Black 500GB
     
  2. barkmonster macrumors 68020

    barkmonster

    Joined:
    Dec 3, 2001
    Location:
    Lancashire
    #2
    I'd suggest swapping the drives around to see if it's any faster in the optical bay. It sounds like the drive itself is to blame because even if it was dropping to SATA II (3Gb/s) speeds it would be over 200Mb/s, you're only getting SATA speeds (1.5Gb/s).
     
  3. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #3
    Was it always this slow since you installed it, or is this slowdown something new?

    Do you have TRIM enabled?
     
  4. Big Ron macrumors 6502

    Big Ron

    Joined:
    Dec 7, 2012
    Location:
    United Kingdom
    #4
    Do you have an alternative data cable to hand? It might be worth swapping them to rule it out, it could be breaking down
     
  5. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #5
    Try doing an internal secure erase in Parted Magic. Do not just try doing it in Disk Utility. I did this on a Verbatim SSD and it doubled the speeds. I am not sure what caused me to need to do that though.
     

Share This Page