Low Power Loss Ferrite Core Choke Design Ferrite core chokes are comprised of a compound of iron-oxide and other metal elements whose properties hold energy much longer than common iron-core chokes at high frequency.   Reduced core energy loss. Lower EMI interference. Resists rust better than standard iron core chokes. Core Energy Loss   Ferrite Core Choke 25% Lower       Iron Core Choke           What is a Choke? A choke is an inductor that stores energy and regulates current. The above photos are for reference only. Motherboard specifications may vary by model.