![]() When either Furmark or OCCT are detected running by the driver, three sensors measure the inrush current and voltage on all 12 V lines (PCI-E slot, 6-pin, 8-pin) to calculate power. In order to stay within the 300 W power limit, NVIDIA has added a power draw limitation system to their card. GTX 580 – Voltage and current monitoring chips, labelled U14, U15 and U16 To shorten the story, NVIDIA uses a mix of hardware monitoring chips AND FurMark detection at the driver level to limit the power draw. ![]()
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