I've been using Gnome Flashback, but just found out about Mate. I loaded the Mate desktop and it looks perfect for me. I started to download the Mate distribution and it needs to know 32 or 64 bit. I usually look at the 'About this computer' box in Ubuntu to get that info, e.g.:
file:///home/george/Pictures/Screenshot%20from%202017-04-28%2009-53-36.pngIs there anything similar available in Mate?