HDD Replacing.

Discussion in 'iMac' started by smilinmonki666, Dec 23, 2010.

  1. smilinmonki666 macrumors regular

    Jan 20, 2008
    I'm going to replace my iMac 24" Alu WD HDD today & going from 320Gb to a spare 1Tb drive. I think the replacement drive will be a 5700/ 5900rpm drive SATA II. Will this be ok as I read that people recomend a 7200rpm speed drive to be used with the iMac.

    I think I will be fine but I thought this may be for optimisation?

    Can anyone help before I take the plunge?
  2. DannyBres macrumors 65816


    Oct 30, 2007
    the main bottle neck in modern computers is the read/write speeds of the HDD.

    if your 320gb drive is a 7200rpm drive.... and your 1TB drive is 5900rpm, you will notice a MAJOR performance decrease in alot of tasks!

    -Opening Apps

    -Copying Files

    -I can't think of any more! :(

    Think carefully, I have a 2TB 7,200rpm HDD and it is a major bottleneck!!!! I want a SSD so bad!
  3. wrldwzrd89 macrumors G5


    Jun 6, 2003
    Solon, OH
    Besides what was said above about the disk I/O speed holding things back (which I wholeheartedly agree with), also of note is that Intel iMacs are a pain in the rear to disassemble. They use Torx screws as well as several other non-standard fasteners.
  4. DanielCoffey macrumors 65816


    Nov 15, 2010
    Edinburgh, UK
    I have just replaced my 24" iMac mid-2007 internal HDD with an OCZ 120Gb 3.5" SSD today using the guide on http://www.ifixit.com/Browse/iMac_Intel - they tend to only do a guide for the smaller screen size of each year's model of iMac, so check there for a HDD replacement guide. Most of the details will be the same for the larger size except possibly some bezel screw sizes and possibly the LCD inverter cable.

    You should be fine with a Western Digital Caviar Blue 7200rpm drive in your chosen capacity.

    As for tools, grab yourself the torx tool set that tends to appear on eBay for about £5 / $8 - I only used the T6 and T8 bits. Suction cups can be got from any poundshop and I bought two of the sort to put tea-towels onto the wall for 0.70p each. The main issue with the installation was actually the dust when refitting the LCD but a good clean while the case was in bits and taking care not to get any fingerprints on the screen worked. A wipe with a clean microfibre cloth and all was well.
  5. smilinmonki666 thread starter macrumors regular

    Jan 20, 2008
    Ok, so I have already have a WD caviar Green Powered 1tb drive. Searching through specs, it tells me the drive has 8mb cache. Would you recomend to get a drive with 32mb cache min? The drive is 7800rpm.

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