Volt-mod af GeForce 6600GT

XBit-Labs har været igang med det seneste grafikkort fra nVidia, GeForce 6600GT, og de opnåede en clockfrekvens på 640 MHz, mod de 500 MHz som er standard. De opnåede dette ved hjælp af et volt-mod.

The overclockability of the graphics processor is another matter, as we deal with NVIDIA?s first GPU made with the 0.11-micron tech process. The thinner tech process and the smaller transistor count in comparison to the GeForce 6800 series should render this chip capable of working at higher clock rates.

Let?s check it out. The core voltage regulator is based on the ISL6534 chip from Intersil. It is a dual-channel pulse-width controller capable of driving a line regulator. One of the channels supplies power to the GPU. Unlike the regulators on GeForce FX 5950 Ultra or FX 5900 Ultra cards, which have digital inputs for setting the output voltage level and capable of adjusting the output voltage ?on the fly?, this chip uses a resistor devisor for setting the output voltage.

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