Be sure to check your video card’s documentation to see if this 6-instead-of-8-pin configuration will work for you.
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Unfortunately, even though a smaller cable fits, some cards simply won’t work properly without the full power provided by an 8-pin connector. If this is the case, but you only have a 6-pin 12V power connector, a 6-pin one will fit but won’t provide any more than what the 6-pin provides. Video cards sometimes come with an 8-pin connector if they can utilize more power than what a 6-pin cable can provide. Some video cards, for example, draw more than 75 watts, in which case connecting a 6-pin 12V power cable can provide more power to the card. The 6-pin 12V power connector is used to power PCI Express expansion cards that require more power than their expansion slots can provide, which is 75 watts.
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You can see other ATX power supply connector pinouts in our ATX Power Supply Pinout Tables list.Ģ:23 How to Test the Power Supply in a Computer Using an ATX 6-pin 12V Power Connector Pinout Reference for ATX 6-pin 12V Power Connectors If you’re using this pinout table to test power supply voltages, be aware that the voltages must be within ATX specified tolerances. Tim Fisher ATX 6-pin 12V Power Connector Pinout (ATX v2.2)īelow is the pinout for the standard ATX 6-pin (3×2) 12V power connector as of Version 2.2 of the ATX Specification (PDF). The terms “PCI Express cables” or “PEG cables” (for PCI Express Graphics) are sometimes used to describe a 6-pin 12V power connector. On motherboards, the more common connector used for this purpose is the ATX 4-pin Power Connector, used either by itself or with a second 4-pin connector, creating an 8-pin connector. This 6-pin connector is also sometimes used to provide extra power to high-end video cards. The ATX 6-pin power supply connector is a motherboard power connector used to provide +12 VDC to the processor voltage regulator. Pinout for the ATX 6-pin (3×2) 12V Motherboard Power Connector
3 Using an ATX 6-pin 12V Power Connector.2.1 How to Test the Power Supply in a Computer.2 ATX 6-pin 12V Power Connector Pinout (ATX v2.2).