Performance difference 32-64 MB cache?

Discussion in 'Mac Pro' started by Photoshopper, Jan 24, 2012.

  1. Photoshopper macrumors regular

    Photoshopper

    Joined:
    Mar 24, 2010
    Location:
    Idaho
    #1
    I have to replace my failed 6-mo. old OWC SSD in my 3.2 Ghz MP. I going with a Black Caviar HDD this time ("fool me twice...").
    As before, it will only be for system and apps.

    Will I see any performance difference between a drive with either 32 or 64MB cache? I can save a few bucks with the former and don't need 1TB capacity with the latter. I use PS,LR and will be adding FCPX.
    Thanks!
     
  2. beaker7 macrumors 6502a

    Joined:
    Mar 16, 2009
    #2
    If its 6 months old its under warranty.

    RMA it and get a new one.
     
  3. Photoshopper thread starter macrumors regular

    Photoshopper

    Joined:
    Mar 24, 2010
    Location:
    Idaho
    #3
    Yes, that's part of the plan. Then sell it. I'm out $100 for a diagnosis, not payable by Apple because the problem was third party. Not going to install another one. They work great until they don't.
     
  4. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #4
    Probably not as some of the newer 64MB cache drives are slower than the prior 32MB models. You will however notice that you are now using an HDD and speed will feel at least twice as slow. Better to get a 600GB Velociraptor as a stop gap if you need HDD and don't trust SSD. At least it has a 3-5ms access time vs. 0.5ms for SSD and 8-16ms for everything else. When it is boot it matters.
     
  5. beaker7 macrumors 6502a

    Joined:
    Mar 16, 2009
    #5
    Odd on the SSD. We have deployed over 50 in my office and haven't had a failure.

    If you're going from SSD to HD the drop in performance from that will vastly overshadow any difference between 64 and 32 MB cache.
     
  6. LostSoul80 macrumors 68020

    LostSoul80

    Joined:
    Jan 25, 2009
    #6
    OT
    I somehow thought the 32MB was referred to processor cache. I just froze.
    A paradise. :eek:
     

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