Graphic Cards :: How To Reduce Intel HD4600 Shared System Memory

I have asus n550ja laptop with 8gb memory, the shared system memory is 1760mb, I usually don't play any games, there is no reason I can use that much graphic card memory. But because of the high shared memory, I cannot use all possible memory for virtual machine or ramdisk, when I use those, they can only maximum use about 6.5gb memory and cannot go higher. So I wonder is there a way I can reduce the intel graphic card shared system memory?