Today's Graphics Display Cards come in several variants. There are the power-hungry ones which usually belong to the high-end category of cards. These require a power connector directly from the power supply to supply enough current on the +12v line to the card. For the mid-range cards, however, many of them do not come with power connectors, since the current they draw are within the specifications of the capability of the modern-day . This takes away the hassle of plugging in the power connectors for the user. However, this convenience comes at a price: There is a limit to the amount of current supplied to the card. When we overclock these cards, especially for the heavy-duty overclockers who modifies their cards and bioses for higher voltages, this limit can be easily hit. And this draws up a wall for the enthusiast, so no matter what cooling and voltages they apply, they find that their cards go no further.
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