each of these is 4GB DDR4
now just need to align 'em
was too fiddly to get these back on with hotplate, trying IR reflow
after fixing one short (caused by a bodge wire that melted in the oven) it's alive!! the 16GB chips even pass the DDR4 test for the 8GB chips with the previous config :0
linux works!
now just need to align 'em