Good utility that measures actual RAM usage?

I want to see what the maximum amount of physical RAM will be used by ARMa2 so I can setup a RAM drive to use what's left over. What program would be best for doing this?

Note: It'd be great if the program posted a chart or graph of the maximum RAM used too.

What is your total RAM capacity? Generally, its regarded as non-optimal to run RAM drive's on modern Windows OS's due to the way they manage RAM utilization and optimize application access.

However, for specific tasks which you'd like to speed up, it could still be worthwhile.

The total amount of ram you are working plays a part in deciding whether this is something you should be pursuing or not.