5400rpm vs 7200rpm for iMac PATA-SATA Application

Discussion in 'iMac' started by Dadioh, Aug 12, 2011.

  1. Dadioh macrumors 65816

    Dadioh

    Joined:
    Feb 3, 2010
    Location:
    Canada Eh?
    #1
    I have a 2008 24" iMac with a 120GB SSD as the boot drive. I am going to replace my DVD drive with caddy with built in PATA (IDE) to SATA adapter. I plan on buying a 500GB drive and partition it for OS X home directory and the other half for bootcamp.

    My question is, given that I am inherently slowed down by the PATA-SATA interface is there any point getting a 7200rpm drive or should I save the power and heat and just get a 5400rpm drive?
     
  2. Coerce macrumors newbie

    Joined:
    Jun 27, 2011
    Location:
    England
    #2
    I did a bit of research into this when i put a similar pata-sata optibay in my 06 macbook. the pata interface (if the latest standard was used) had a throughput of 133MB/s, which was on a par with the sata1 interface on the motherboard (1.5Gb/s - 150MB/s). So, in effect, i had 2 sata ports, but the throughput of the 5400 drive couldn't saturate this anway (i read 50MB/s?)

    So I'd imagine a 7200 drive would get closer to the max throughput of pata, and you'd notice a difference? With regards to heat, I'd assume there wouldn't be much of an issue, as people put them in macbook optibays?
     
  3. Dadioh thread starter macrumors 65816

    Dadioh

    Joined:
    Feb 3, 2010
    Location:
    Canada Eh?
    #3
    Thanks. The low risk approach would be for me to just get a 7200rpm drive. It is only $10 more and if I can't take advantage of the speed it doesn't matter. I agree heat shouldn't be an issue. There are 3 fans on the iMac and laptop drives are inherintly cooler anyways
     

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