Quote:
Originally Posted by alcedo
Power consumption of cpu also determines battery live. So it would be interesting to know
what is min and max consumption of rk3288 compared to that i.MX6?. Those values are not as easy to
find as are TDP for intel processors.
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The rk3288 is an ARM Cortex-A17 and i.MX6 SoloLite is an ARM Cortex-A9.
ARM stated something in the lines of «
The ARM Cortex-A17 processor offers a 60% performance uplift and is 20% more energy efficient than ARM Cortex-A9 under the same workload»,
which, if arithmetic (or interpretation) does not fail me (160/80), means that an A17 consumes half of a comparable A9 "per performance".
The first article cannot answer your question because it was issued before the A17, but I mention it since l like it a lot and I do not understand why there are not more of it: '
The final ISA showdown: Is ARM, x86, or MIPS intrinsically more power efficient?'. It's where you can compare your tablet with your desktop.
Freescale/NXP kindly produces nice whitepapers ("Application Notes"), and you may have seen their
i.MX 6SoloLite Power Consumption Measurement, or AN4580. Unfortunately, the SoloLite is so intended for humble tasks that more interesting measurements were performed on higher processors only. Onyx did really squeeze that baby.
Attached is a nice graph of an RK3288 at work: you can for example see that some high quality video playback uses, pause, 1 Watt.