what are the top three materials by weight in a computer

Verified Answer :

  1. Power supply
    2. Monitor
    3. Case 

    Or This 
    Metals, silicon and Petroleum are the main raw materials used in computers by weight
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1power supply 
2 my case is full iron it was so much sorry
3 my actual compute wit weight like 30 pounds i have a fully upgraded alien ware computer that runs like the flash compared to the fps of a mac