Google Pixel Watch 5 will be powered by Tensor chipset

Google may be equipping its upcoming Pixel Watch 5 smartwatch with a proprietary Tensor chip, moving away from Qualcomm processors. This switch to Tensor instead of Qualcomm’s SoC is planned to happen by 2026, so the upcoming Pixel Watch 4 will probably still use Qualcomm’s chip.
The Pixel Watch 5 will probably use Qualcomm’s chip.
About the new Tensor chip
According to leaks, the Tensor chip for the Pixel Watch 5 will include a single Cortex-A78 processor core and two Cortex-A55 cores, architectures introduced in 2017. The use of legacy cores is becoming a trend in the wearable device segment, as chips like the Qualcomm Snapdragon W5 Gen 1 (Cortex-A53 cores) and Samsung Exynos W1000 (a Cortex-A78 core and four Cortex-A55 cores) also utilize older architectures.
According to the leaks, the Tensor chip for the Pixel Watch 5 will include one Cortex-A78 core and four Cortex-A55 cores.

Possible Features
- Alternative to Arm: Google is considering RISC-V architecture as an alternative to Arm for future developments.
- Process Technology: It is not yet known what process technology will be used, but there is speculation that the chip may be manufactured using a 3nm process.
- Modem: If the Tensor for the Pixel Watch is based on Samsung’s design, it will probably use an Exynos modem, just like Google’s Pixel smartphones.
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This potential move to Tensor’s proprietary chips would allow Google to strengthen the integration of its devices and ditch third-party vendors in favor of a more unified ecosystem.
At the same time, Google’s move to a more unified ecosystem would allow it to move away from third-party vendors.