Pine64 Ox64 $6 RISC-V Linux hybrid SBC

Re:Pine64 Ox64 $6 RISC-V Linux hybrid SBC by BizarroLand on Monday October 17, 2022 @01:10PM (#33236603)

I am somewhat confused over the CPU design. Does anyone know what the reason or advantage is for having 2 different architecture processors running at different clock speeds in the same SOC sharing the same ram?

Was this an accident or did it serve a specific purpose?

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Re:Pine64 Ox64 $6 RISC-V Linux hybrid SBC by alexisread on Monday October 17, 2022 @04:48PM (#33239329)

I think it's for hi/low power switching- radio stacks and ML models can be shared, so you don't need to reinitialise them, and you can activate only the high power cpu when required.

Farmbots and wearables are a couple of applications that would match this pattern. Camera AI and radio but running on battery.

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Re:Pine64 Ox64 $6 RISC-V Linux hybrid SBC by BizarroLand on Monday October 17, 2022 @07:11PM (#33240752)

Interesting! I didn't consider power draw at all.

That is kind of weird as the whole system only draws (5v/0.5a = 2.5w) and I can't find anything that states that the power draw would radically alter for utilizing only 1 core.

At 2.5w a 10,000wh battery would run this non-stop for weeks.

[ Parent | on HN ]