Re: Installed memory - Not using all that's installed - W10 x64
It should dynamically allocate RAM to your IGPU. If the CPU should ever need more than 3.37 gig, it should take from the IGPU if it doesn't need it itself.
Test this by filling up your RAM, and see if you get more usable RAM. (don't run a game when doing this)
MOBO: Asus Maximus 6 Hero - GPU: Gigabyte GTX 980ti xtreme - CPU: I7-4770K - PSU: Corsair AX760
RAM: Corsair Vantage 2x4GB - SSD: Samsung 840 Evo 512GB - Case: NZXT H440