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The OC trio of VGA Hotwire, OC Key and Subzero sense, which were first included on the Rampage IV Extreme, are also additions to the new Maximus V Extreme. Focusing on VGA Hotwire specifically, these two boards can sync up with VGA Hotwire-enabled, high-end ASUS graphics cards, including the current GeForce GTX 680 DirectCU II and Radeon HD 7970 DirectCU II.
VGA Hotwire plugged into the Maximus V Extreme
VGA Hotwire soldered into the HD 7970 DirectCU II
The two DirectCU II graphics cards have specific PCB spots to solder on the wires, or in the case of the upcoming ROG MATRIX HD 7970, simply plug in. The other ends then go into the corresponding pins of the Extreme motherboard. This allows the OC Key to read the voltages and apply changes directly to the card, in real-time, without using software.
GeForce GTX 680 DirectCU II PCB – there are three measurements: GPU voltage (GPU OVG), memory voltage (MEM OVL) and PLL voltage (PLL OVL). Two wires are needed for each one and female plugs are needed at the other end for the Extreme PCB pins. There are two sets of pins on the Extreme PCB for up to two cards.
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