This message was posted on behalf of Intel Corporation
I just wanted to let you know that in most cases the computer manufacturer has already configured the system to use the maximum amount of graphics memory that is possible for your particular computer model. Sometimes you can change these values through BIOS level, if there are no options available in the BIOS then is not possible to change it. My recommendation in this case is to check with your computer manufacturer if there are tips on increasing the amount of graphics memory for your computer model.
For additional information see Frequently Asked Questions for Graphics Memory on Windows 8*/8.1*; Frequently Asked Questions for Graphics Memory on Windows 8*/8.1*
If you have more questions, please let me know.