No you cannot "allocate" shared Ram on Intel Q77 Express Chipset Graphics to get a Game to see it as a Real GPU.  You also cannot Recover the shared ram to get a full 8 gigs available to the system even if you add a GPU.  The Intel Graphics is part of the CORE I3 I5 I7 series processor and uses Dynamic Ram Allocation for the Video with a Frame Buffer so it can use up to 1.7gigs of DDR3 system ram for the video.

Dynamic Video Memory Technology (DVMT) is a method for dynamically allocating system memory for use as graphics memory to balance 2D/3D graphics and system performance. If your computer is configured to use DVMT, graphics memory is allocated based on system requirements and application demands (up to the configured maximum amount). When memory is no longer needed by an application, the dynamically allocated portion of memory is returned to the operating system for other uses.

Many graphic-intensive applications (especially games) require a minimum amount of video memory in order to run correctly (or to run at all). Video memory is allocated based on the amount requested by the operating system. When the memory is no longer required, it is returned to the operating system for use by other applications or system functions.

DVMT allocates memory based on system needs. Some newer systems have an option in the system BIOS that adjusts the amount of memory available for DVMT. Memory can be allocated up to the maximum limit set by the graphics driver. Unlike previous operating systems, Windows Vista* and Windows 7* have greater control over memory management and determines the amount of the graphics memory together with the Intel® Graphics Driver.

1The actual amount of maximum graphics memory on your computer can be less than the amounts listed in the above table. The actual amounts greatly depend on your computer model's specific configuration. Configuration factors may include but are not limited to the following:

• The graphics memory allocation method set by your computer manufacturer.
• Amount of system memory available.
• Amount of pre-allocated memory.
• Operating system.

The best place for obtaining information about your computer's specific configuration is from your computer manufacturer. Your computer manufacturer may have altered features, incorporated customizations, or made other changes that may limit or reduce the actual maximum graphics memory amount possible for your computer.