To increase the upper memory limit increase the Memory Limit value.
The upper limit is the RAM memory available in your computers. The
value is given in MB.
For example, if you computer has 2GB of RAM memory, you can change
the value to a maximum value of 2048 (and usually the actual limit
is a bit lower than the max).
If the selected value is not supported by your system (32 bits only),
the value will be reduced automatically.
Note that the tool has to be restarted in order to take
the new settings into account.