Thread crossposted with the VF2Lite topic: What is VF2 lite's idle power? And, tricks to lower the idle power further?
Hi all!
Can you please check and confirm what the VisionFive 2 (and VisionFive 2 Lite) power consumption is in idle?
Also, do you have any tricks to make the idle power go even lower? Such as:
- set some “power saver” mode in the Linux kernel,
- power off CPU cores,
- lower the CPU clock, or
- powering off the GPU, WIFI or Ethernet interface,
- set the USB3 controller (which is connected to the SoC via PCI, right?) to some kind of power savings mode
From 2023 I find a 2.44W figure for VisionFive 2 here https://bret.dk/risc-v-starfive-visionfive-2-review-jh7110/#Power-Draw-Consumption , however I thought with particular settings, a newer Linux kernel etc., it may be a lot lower. For VisionFive 2 Lite I don’t find any idle power figure mentioned anywhere at all.
Somewhat relatedly, Jeff Geerling reports that the Milk-V Mars CM which uses the same StarFive JH7110 SoC as VF2&VF2Lite does, idles at 1.1W. I’m not sure exactly in what setting he got that measurement - that Mars Compute Module was connected to some Raspberry Pi 4 base board.
Thanks!
“Idle power draw (at wall): 1.1 W” Milk-V Mars CM · Issue #22 · geerlingguy/sbc-reviews · GitHub
“At idle, the Mars CM only pulls down like 1 watt” ht tps ://ww w.jeffgeerlin g.c om/blog/2023/getting-risc-v-again-milk-vs-mars-cm/
http s://ww w.youtub e.c om/watch?time_continue=362