Upgrade HD - WD Caviar Blue vs Black?

Discussion in 'iMac' started by definitive, Nov 10, 2011.

  1. definitive macrumors 68000

    definitive

    Joined:
    Aug 4, 2008
    #1
    I've noticed on Western Digital's website that they have released new versions of Caviar Blue and Black SATA6 hard drives. My current iMac is using a Blue SATA3. I'm planning on getting a bigger size drive (1-2tb), and would like to get some input on which would be a better upgrade.

    On paper, both Black and Blue produce the same amount of noise and use same amount of power, but a bit less than the older SATA3 version. My main concern is noise and heat, so I'm wondering if the faster Black drive would be a good upgrade, or if I should stick with same, but updated Blue that I have now. My system doesn't support SATA6, so I know that I won't utilize full speeds, but would like to know which of the two would be a better purchase while at the same time keeping the two concerns I mentioned at a minimal.
     
  2. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #2
    Get the Black as an upgrade if you want and if it is your boot drive. You get absolutely no benefit from a SATA3 6Gb link as your HD can't do anything over 120MB/s SATA2 does 280MB/s. You don't use 50% of SATA2 3Gb yet. If you get an SSD it would make a difference.
    If WD has greater platter density on the upgrades or more cache or processors then you'll see a speed benefit but maybe 10%. There are just no HDD's that can fully saturate SATA2 3Gb/s.
     

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