hardware reserve

Is it normal to have a ram hardware reserved? im using athlone 200ge with vega 3 graphics. my ram is 8gb kingston hyperx. 2.1gb is allocated as hardware reserved and the rest (5.9gb) is my useable ram. thanks

So I just got a new pc, and it’s not a gaming pc but it surprisingly runs Fortnite quite well on some high settings and gets solid FPS. Now, I also am interested in buying Call of Duty World at War too. But the thing is, I have all of the requirements met for it except for VRAM, mine graphics...