A graphics card with one 8 pin power connector can get maximum of 225w of power 75w from pci express x16 slot and 150w.
Gpu power cable 8 pin.
As always there are outliers.
Graphics card 6 pin and 8 pin connectors explained.
8 pin gpu female to 8 pin pcie male adapter cable provides a convenient solution for supplying video graphics card power with an 8 pin connector for gpu cards that require more power a female end to connect to the power connector of the power supply and two male ends to plug into the video graphics card.
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This cable was originally created for workstations to provide 12 volts to power multiple cpus.
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If the gpu requires more than 150 watts then it will by design come with an 8 pin connector or two 6 pin connectors.
6 pin power connector can supply 75 watt to the graphics card while 8 pin power connector can deliver maximum of 150w to your graphics card.
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8 pin eps 12 volt power cable connector.
Depending on the power supply the connector may contain one 12 volt rail.
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Although the math doesn t seem right when compared to the 6 pin connector the 8 pin connector can deliver 150 watts to the graphics card.