How to indentify PC memory

I have a bunch of loose memory from junked computers that have no name
or size that is readily identifiable. How can I find out what these are?
As an example one shows:
64AOT W/0#: 500043
Assembled in America

One is marked:
MT8LSDTB64AG-6623D 9819 469264
MEMDIM017AAWW

Another is marked:

SM564168574N03RHCH
SPR2002042002381 PUERTO RICO

There are more. Any help greatly appreciated...

 

The no info ones are not worth to find out. For the rest google them like the MEMDIM017AAWW. Worthless unless you are going to donate them.

 

I use the stuff to fixup grand kids and great nieces and nephews computers.
They aren't much good for anything else, I guess...

 

Sounds good to me being a granpa also and I hate throwing good stuff out too. Identifying RAM is really tough, at least it is for me. It all depends on slot configuration, single or double sided and which memory chips are on there. Quite the quagmire. Google what you can sir.

Perhaps our resident RAM guru will step in here this weekend as she works in the industry and could point you in the right direction.