You can have three slots of RAM, but it is not recommended for most users. It is better to have two or four slots of RAM for better performance.
Having three slots of RAM can cause issues with compatibility and stability.
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There are a total of 3 attunement slots in Dark Souls 3. Each slot represents a different element that can be attuned to, which will allow the player to use various spells and abilities associated with that element. The number of attunements needed to fill all 3 slots varies depending on the player’s starting class.