[metadat]

This is really helpful information, thank you!

$30/card out the door isn't bad, although I wonder what the power draw is like. I've noticed my SFP+ 10gbit cards and transceivers get quite warm (different models from what you linked).

[jcalvinowens]

I'm not sure about power. The only way running these old machines is economical for me is because I have solar... that 2013 haswell machine draws about the same power as a znver4 machine I built last year, but it takes several days to build a Yocto image the znver4 builds in two hours.