New class of low-power SoCs: Wearables?

Discussion in 'Mobile Devices and SoCs' started by ToTTenTranz, Jan 8, 2015.

  1. ToTTenTranz

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    AFAIK, almost all of the smartwatches we've seen until now were using an underclocked Snapdragon 400 with two disabled Cortex A7 cores.
    Today, Mediatek announced what they claim it's their first SoC exclusively for wearables:

    Strange that a SoC exlusively dedicated to wearables wouldn't have an integrated Bluetooth module..
     
  2. Erinyes

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    I was wondering that too..why would they not have integrated Bluetooth? Oh and I'm still trying to figure out Motorola using an OMAP 3 in the Moto 360 :S

    Dual A7 is fine but Mali 400 is getting really long in the tooth now..couldnt they have used a Mali 720 or something? I believe that is more power efficient. Makes me wonder if this is really a new SoC. Could they just be using their old 40nm 6577? Wouldn't exactly make sense from a power perspective but it would be dirt cheap!
     
  3. ToTTenTranz

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    They seem to be bragging a lot about the SoC's die size, so maybe they were simply looking for the smallest possible GPU for a given fillrate/target resolution and simplistic 3D capabilities.

    As for OMAP3.. I guess they were at Texas' bargain bin.
     
  4. tangey

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    I'm waiting with interest to see if Ineda has any news over the next while, for their range of socs for specifically designed for wearables upwards. They have some very interesting backers, including Qualcomm and Samsung. They are also very heavy on IMG IP.
     
  5. Mariner

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    I'd have thought that even the dated Mali 400 ought to be enough for the low-resolution of smart watch faces? The relatively tiny resolution (in modern day terms) should only require relatively tiny performance.
     
  6. Nebuchadnezzar

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    Samsung's been using their Exynos 3250 (2x A7 1GHz Mali 400MP2 133MHz) in their smart-watches for soon to be a year now.

    I think the Mali 400 still might remain perf/W/mm² king out there for these form factors. Also I'm not aware of any SoC that has integrated BT.
     
  7. Erinyes

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    AFAIK they've also been using the same chip in some low end phones and it wasn't specifically designed for wearables. If Mediatek designed a new SoC just for wearables..why not integrate bluetooth as well.

    From what I've read the Mali 400 is definitely king in terms of perf/mm2 but is it also the best choice in terms of perf/W is the question.
     
  8. mboeller

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    IMG seems to be also heavily involved with wearable-SoCs; at least when you see the massive amounts of postings in the IMG blog: http://blog.imgtec.com/ (see the last 2 pages of the blog, especially page 2)
     
  9. Nebuchadnezzar

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    That's the 3470 not the 3250, which quite more powerful and has integrated modem.
     
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