Power Consumption

Currently the S10 controller doesn't support slumber or DevSleep power modes, which is why the idle power consumption turns out to be high compared to the competition. Phison told me that the slumber power (HIPM+DIPM) implementation is nearly complete and a new firmware should follow in about a month, but in the meantime the S10 and Neutron XT aren't really suitable for mobile use. The load power consumption is more moderate, although there are more efficient drives and controller solutions on the market.

SSD Slumber Power (HIPM+DIPM) - 5V Rail

Drive Power Consumption - Sequential Write

Drive Power Consumption - Random Write

Performance vs. Transfer Size Final Words
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  • hojnikb - Monday, November 17, 2014 - link

    Because they are using samsung's controllers. And they already have pci-e controllers.
  • close - Monday, November 17, 2014 - link

    Because Apple only has to worry about their own product, and their PCIe SSDs come attached to a device capable of using it. So you don't buy a PCIe SSD, you buy an Apple device that comes with a PCIe SSD inside. Other integrators/OEMs don't care to do it as it increases costs so it's suitable only for high end. For now. Apple is doing it because it would seem that their customers can afford to pay the premium regardless of other aspects.
  • Kristian Vättö - Monday, November 17, 2014 - link

    There has been a handful of PCs with the XP941, but you are right that Apple is mostly the only one.

    The PC OEMs tend to cut in cost wherever possible because their margins are already razor thin. The XP941 is more expensive than SATA drives because it's the only PCIe x4 drive on the market and in addition the PC OEMs can use the same SATA drives in various models, whereas the XP941 would only fit in high-end models due to the cost.

    For Apple this isn't an issue because the quantities they buy the XP941 in are so large and Apple also has a significant share of the high-end market, which is where the PC OEMs struggle. Plus Apple is one of the only companies that fully understand that it's the user experience that counts.
  • alaricljs - Monday, November 17, 2014 - link

    > Plus Apple is one of the only companies that fully understand that it's the user experience that counts.

    Have to point out here that Apple is one of the only companies where the hardware is just another piece of the user experience puzzle that they have control over. Whereas for PC manufacturers it's almost the only part of the user experience they have control over.
  • Mikemk - Monday, November 17, 2014 - link

    Apple needs to realize that again.
  • warrenk81 - Tuesday, November 18, 2014 - link

    thanks! i've been wondering about this since the MacBook Airs started with the PCIe SSDs in 2013.
  • Shiitaki - Wednesday, November 19, 2014 - link

    Apple produces the entire machine, so they don't have to worry about what the rest of the industry is or isn't doing. Because Apple can put the necessary driver support in their motherboard firmware to boot from a PCI-E drive. Apple also produces the operating system, so they can use a custom driver and not wait for 'official support'.
  • Flunk - Monday, November 17, 2014 - link

    Oh god I hope not, SATA Express' cable standards are a huge mess I hope we never need to deal with. Why we need yet another standard where M.2 makes massively more sense I can't imagine.
  • SleepyFE - Monday, November 17, 2014 - link

    Because of the cable. When you have a tower case you can fit 5+ drives in it and connect via cable. The M.2 is just for laptops as it has to be fixed at the end with a screw an therefor has to lay on something. To put it on an ATX motherboard would take up too much space or it would dangerously dangle from the board. You could use a M.2 to PCI-e connector, but why waste the PCI-e slot? And what's the point of M.2 if you're just gonna plug it into PCI-e anyway? For big cases you need cables. They might be a mess, but you can use the SATA-X (-X= Express) for the boot drive and put all your old drives into SATA ports, so you don't waste them.
  • MrSpadge - Monday, November 17, 2014 - link

    It's a bit surprising that it takes so long - not because it would be easy, but because we've known since a long time this would be coming. The manufacturers should have known it long before us. And it's not like there has been any other significnat movement regarding SSD controllers in the past 2 years.

    On the other hand - I don't mind if they take their time and deliver polished products with firmware which is not in beta state any more!

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