Fastest external SSD for large files iMac late 2017

Discussion in 'Buying Tips and Advice' started by scarab0, May 29, 2019.

  1. scarab0 macrumors member

    Dec 23, 2017
    I am running huge simulations through Bootcamp on WIN 10 on my iMac. What external SSD should I get to be able to load files as fast as possible?
  2. dazlicous macrumors 6502a


    Jun 2, 2011
    Samsung X5 is about the fastest you can get but comes at a huge price
  3. scarab0 thread starter macrumors member

    Dec 23, 2017
    Thanks a lot for the reply.

    Just bought the 256 GB version at my local store to test it and it seems like it performs at the same speed as my iMac built-in SSD does. That's around 2610 mb/s.

    I wonder if there is a way to improve that speed and perhaps double it? It takes my iMac roughly 38 seconds to load certain files and we are aiming something around 3-7 seconds.

    Is the iMac pro perhaps an option or are there way faster internal SSD's on the market to achieve that?
  4. anth macrumors member

    Jul 19, 2005
    If it would be helped by faster random writes, Intel Optane 905P might be worth considering. Sustained, though, I believe your X5 has it beat.

    How about putting multiple X5 drives in RAID 0?
  5. MRrainer macrumors 65816

    Aug 8, 2008
    Zurich, Switzerland
    Yeah. Just put one (or multiple) enterprise SSD in an external TB3-chassis.

    Though, at the price, it might be worth thinking about buying a server with a couple of U.2 slots and fill them to run your simulations there....

    A dog with a rocket on its bag is still a dog...
  6. HDFan macrumors 65816

    Jun 30, 2007
    Here are the Blackmagic iMac Pro 4 TB SSD results which don't look that much better than what you have: BlackMagic DiskSpeedTest SSD iMac Pro  .png
  7. macsplusmacs macrumors 6502

    Nov 23, 2014
  8. Cordorb macrumors regular

    May 8, 2010
    are you using a Thunderbolt 3 external housing for the disk
    (and use the short Thunderbolt 3 cables )
  9. jorikc macrumors newbie

    Jan 23, 2008
    Eindhoven, The Netherlands
    Are you sure the bandwidth to your drive is the bottleneck in loading the files for your simulation? Maybe these files are compressed and instead your CPU is the bottle neck? I'd like to make sure I understand the bottle neck before buying faster components ;-)

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9 May 29, 2019