Luke Kenneth Casson Leighton
lkcl at lkcl.net
Mon Nov 14 18:43:33 GMT 2016
crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Mon, Nov 14, 2016 at 6:31 PM, Matt Campbell <mattcampbell at pobox.com> wrote:
> Sounds promising. Just curious, how does the power consumption of the RK3288
> compare to the A20?
don't know yet, but the PMIC does 3A @ 1V (!!) for the CPU and the
same amount for the GPU (!).
it'll almost certainly have to be down-clocked to 1ghz, or a special
cpufreq arrangement to be made where 2 cores are allowed to run up to
the maximum 1.8ghz and the other two are capped at say 400mhz or less,
something like that.
it's a 4-core 28nm where the A20 was a 2-core 40nm, so that's a 1/2
power-saving factor... running at 1ghz should be a roughly equal power
consumption.... but the RK3288 is an A17, the A20 is an A7.
just have to see how it goes, basically.
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