According to Redditor VastOption875, the old server, which had been collecting dust in their garage, contained 30 64GB DDR4-2666 memory modules, totaling nearly 2TB.

Trenta moduli Samsung DDR4 da 64 GB, ECC e dual rank a 2.666 MHz, per 1,92 TB complessivi: un utente australiano dice di averli trovati in garage, arrivati con i server dismessi…

However, these registered ECC DDR4 sticks will need to find a new home in a suitable Xeon, Epyc, or Threadripper system.