[lloeki]

> I'm persistently hearing this story that power supply quality affects SD card life

Not SD card life indeed (in my case at least), merely IO failing, hosing the filesystem long term because of b0rked writes. The SD card is fine, it's just the data that eventually becomes inconsistent garbage.

I noticed the power LED showed the undervoltage behaviour, measured the power output which indeed showed the voltage not being stable on power spikes, so bought a better power supply, problem gone. Got the same kind of issue with greedy USB devices, so either went the powered hub route or used self-powered hard disks.