Is it possible to use my ram as dedicated video ram on windows 8 bootcamp

i have a mid 2014 MacBook pro
8gb of ram
dual core i5
intel iris 5100 graphics
im using my mac for gaming and need some dedicated video ram, I saw other computers like asus or Toshiba that were able to boot into windows bios and change there ram as dedicated ram, bootcamp has no bios so im wondering if there any third party applications of something built into bootcamp that would allow me to change a setting like that.
thanks in advance

From http://www.intel.com/support/graphics/sb/CS-033984.htm
How is graphics memory allocated in Windows 8/8.1*?
The Microsoft Windows 8/8.1 operating system adds improved support for graphics, simplifying graphics, memory configuration, and management. As part of this new graphics memory management, the Intel® HD Graphics Driver leaves more of the graphics memory sizing to Windows 8/8.1.
W8+ report GPU memory differently as compared to OSX.
This is from a 2012 Intel HD4K running W8.1 64-bit. Notice the value of Adapter RAM versus what is reported in Screen Resolution.

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