A Pi5 PSU can handle the whole setup. Other e.g. laptop USB-C PD PSU can do the same as well of course as with 45W or 65W 12V is 3A for those. But good that the 27W can startup an SBC and spinup 3.5HDD at same time. Or maybe it is above spec, I have not measured current.Some update w.r.t. power consumption: Now using on-chip SATA instead of the JMB dual-SATA external chip and idle power consumption is about 600mW lower. Idle is not really idle as for example the power measuring daemon runs in the background and a whole KVM/libvirt/QEMU is active as well. But 4 Watt is much lower than the max peak at about 25 Watt. That is when HDD spins up and also usually then NVMe is quite active at that moment. It is no problem for 12V 10A PSU and/or car battery, but a next challenge is if a Pi5 PSU can handle it (via a module requesting fixed 12V) for the whole setup.
Statistics: Posted by redvli — Wed Apr 30, 2025 10:27 am