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 2 GB 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.