On Fri, 19 Sep 2025, Steve Lewis wrote:
  Well, just yesterday I tested a set of RWS (RAM)
replacement cards for the
 IBM 5110 from Patrick Lebbard from Canada - and I'm very impressed.  They
 work well, I had them running for a few hours.
 Details are described here:
 
https://voidstar.blog/ibm-5110-rws-ram-modern-make-replacements/
 or VCF thread
 
https://forum.vcfed.org/index.php?threads/ibm-5110-ram-timings.1253087/ 
Interesting, I was thinking about replacing the RWS modules with two
standard 62256 SRAMs (plus 74180) for my systems that aren't maxed out.
But I would not consider any SMD stuff.
Christian