Working on CPU frequencies, the armbian image limit max cpu freq to 1.3 GHz.
Neverthless the box has been sold as 1.5Ghz, so I was asking myself why should I lose some calculation power.
After few serching around I found that the box can run stable at 1.4GHz with 1.35V voltage.
Using armbian-config, the dtc can be modifed:
opp-1200000000 {
opp-hz = <0x00 0x47868c00>;
opp-microvolt = <0x124f80>;
clock-latency-ns = <0x9c40>;
status = "okay";
};
opp-1296000000 {
opp-hz = <0x00 0x4d3f6400>;
opp-microvolt = <0x137478>;
clock-latency-ns = <0x9c40>;
status = "okay";
};
opp-1392000000 {
opp-hz = <0x00 0x52f83c00>;
opp-microvolt = <0x149970>;
clock-latency-ns = <0x9c40>;
status = "okay";
};
I also tested 1.5GHz but temperature raise wuickly when stressed (up to 90°C) and started to have some unstable unexpected behaviour, so I stick to 1392 MHz with good results.
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