Anyone have the xp941?

Discussion in 'MacBook Pro' started by Famousaudio, Jan 12, 2015.

  1. Famousaudio macrumors newbie

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    #1
  2. yjchua95 macrumors 604

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    The XP941 and SM951 are M2 PCIe SSDs, they won't fit.

    Apple uses a proprietary non-M2 PCIe blade.

    The current SM SSDs used by Apple share the same NAND as the XP941, but are of a different form factor.
     
  3. Famousaudio thread starter macrumors newbie

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    # bummer .... i would love to experience those crazy read and writes... hopefully owc makes a faster pci ssd soon
     
  4. yjchua95 macrumors 604

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    #4
    My 1TB SM1024F in my 15" rMBP clocks in at 1050MB/s read and 1020MB/s write.

    The reason is because the 1TB SSDs in the rMBPs have 4 lanes of PCIe. 512GB and smaller only have 2 lanes.
     
  5. Famousaudio thread starter macrumors newbie

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    thank you i didnt know that.... when the prices drop now i know what upgrade to buy.
     
  6. yjchua95 macrumors 604

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    To be honest I've not noticed a single damn bit of difference between that and the 512GB SSD in my retina iMac. Save the money and go for 512GB.
     
  7. Famousaudio thread starter macrumors newbie

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    the gentleman above me said the 256 and 512gb mac drives operate on 2 lanes... which makes sense. i just purchased a retina 15 from best buy .... i think i may buy the 1tb apple drive which is 4 lanes
     
  8. yjchua95 macrumors 604

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    I'm that gentleman.

    And both posts are by me.

    Save the money and get 512GB if you don't need the space :)
     
  9. Famousaudio thread starter macrumors newbie

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    lol im such a noob where did you buy your 1tb?
     
  10. yjchua95 macrumors 604

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    I got it when I bought my 15" rMBP in the Apple Online store. I customized it with the upgraded processor and 1TB SSD.
     
  11. pertusis1 macrumors 6502

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    I put an XP941 in my 5,1 Mac Pro. Works great, but I'm having trouble upgrading to Yosemite.
     
  12. alex0002 macrumors 6502

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    Did you use a PCIe card - which one?
    I'm assuming that the XP941 can be used as the boot drive?

    I'm think about doing something similar for my Linux desktop.

    Back on topic - it would be nice if Apple would move to an industry standard M2 PCIe format for the rMBP when Broadwell/Skylake comes along.
     
  13. yjchua95 macrumors 604

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    Apple and industry standard don't go hand in hand together.
     
  14. alex0002 macrumors 6502

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    Yeah, I'm aware of that - in most cases at least. :)

    But from time to time they adopt something standard, when it appears to be to their advantage - they even adopted USB3 and HDMI interfaces for the MBP in 2012.

    If industry adoption of the PCIe M.2 format continues at the current rate, Apple might be better off going down that route, paying less to suppliers and keeping the same high prices for retail sales. Only a few people will open up their rMBP to upgrade anyway, so not a huge number of lost sales.

    Back on topic - the best option for upgrading the current Haswell rMBP would appear to be the O.E.M. Samsung PCIe SSDs from eBay.
    http://www.ebay.com/bhp/macbook-pro-retina-ssd
     
  15. pertusis1 macrumors 6502

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    Lycom M.2 (NGFF) SSD to PCIe 3.0 x4 adapter (which works fine).

    Oh, and I did manage to get os10 installed. It just needed a PRAM reset. It works great as a boot drive.
     

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