Snapdragon Wear 4100: Qualcomm Smartwatch SoC is twice as fast

Qualcomm has launched the Snapdragon Wear 4100 (+), an updated smartwatch platform. This again consists of the actual SoC and an optional always-on chip, which takes on a variety of tasks such as measuring the pulse and thus significantly extends the running time of the watch.

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Unlike the Snapdragon Wear 3100, the Snapdragon Wear 4100 is manufactured in a 12 nm instead of a 28 nm process. Instead of four Cortex-A7s with 1.1 GHz, four Cortex-A53s with 1.7 GHz now calculate. The LPDDR3-400 has been replaced by LPDDR3-750. CPU speed and memory bandwidth are expected to increase by 85 percent. The graphics unit is switched from an Adreno 304 to an Adreno A505, the performance should more than double.

According to the manufacturer, the power consumption of the Snapdragon Wear 4100 drops by 22 percent to 42 percent compared to the Snapdragon Wear 3100 depending on the application. Also relevant for the runtime is the always-on-chip, more precisely an improved version of the previous QCC1110 with Cortex-M0 core and its own SRAM and recently also Bluetooth 5. The 4G functionality, however, remains reserved for the actual SoC, for example for VoIP LTE calls or for music streaming.

Presentation of the Snapdragon Wear 4100 (Image: Qualcomm)

The Snapdragon Wear 4100 can outsource various tasks to the QCC1110 – including measurements of pulse and sleep behavior, faster clock response (tilt-to-wake), counting steps, setting alarms, running stopwatches and providing card functions. In addition, the always-on-chip can now output 64,000 instead of 16 colors for prettier dials. The first smartwatches with the Snapdragon Wear 4100 include the Xiaotiancai Z6 Ultra children’s watch from the BBK subsidiary Imoo and the Tic Watch Pro 3 from Mobvoi, WearOS from Google runs on them.

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