oh. so then 'unclaimed' is synonymous with 'unused' in this case. Not familiar with this word usage but it makes sense. It's unused potential CPU power because more RAM can make a CPU much more powerful! Then there's swap area provided by the disk. If you don't have enough RAM, then your CPU is constantly swapping out RAM to the disk which means that your "memory" is running at the speed of the disk I/O. :-)~MIKE~(-: On Sun, Oct 19, 2014 at 2:20 PM, coverturtle > wrote: I ran lshw>hardware and it says that I have unclaimed RAM. How do I recover it? Someone covered this before, remember? If you are running Windows with a 32bit OS, then you can only access about 3.5 GB of RAM. Otherwise, I wouldn't worry too much. If you have a lot of RAM or much more than you are using, then you will have unused RAM of course.