![]() That could easily end up runing everything through one wire. ![]() If this is bad advice, then online sellers that sell Molex to 8 pin PCIe adapters should stop selling those first. So if your graphics card power consumption is more than 150W then it will definitely come with an 8-pin connector or two 6-pin connectors. If one fails to connect, all the current will go through the remaining wire and it could melt. The 8-pin power connector can deliver a maximum of 150W to your graphics card. ![]() Just be careful to not use any 6 pin PCIe power connectors that only have 2 12V wires, and thin wires that are smaller than AWG 20. If you want to connect our PSU into a 4-pin EPS. This would convert it in to a 6 pin connection. Our power supply units (PSUs) use an 8-pin EPS12v CPU cable that can be split into two 4-pin connectors. The 2 sense connections on a 8 pin PCIe board could be permanently connected to the 6 pin ground connections with a little bit of solder and wire. If all 6 wires are present on the 6 pin connector and the power supply can handle the current, then it is safe to get an adapter that will convert the 6 pin connector in to an 8 pin connector simply by grounding the two additional connections on the 8 pin connector. If a 12.5A 6-pin connector on an older power supply is connected to a newer 8-pin PCIe device, the PCIe device should not turn on because it doesn't know if a 12.5A compliant connection has been used. The 8-Pin PCI Express (PCIe) power cable: This supplies power to a graphics processing. Many power supplies that are 12.5A compliant have an additional 2 pin ground connector on the side of the 6 pin connector that can be used to make it to an 8 pin connector. EPS 12V 8-pin ATX: This delivers power from the CPU to the motherboard. 3 Answers Sorted by: 10 From experience, it suffices to install the 8 pin connector on the left. There’s no trick aside from lining up the notch on the connector with the guide on the header. This is attached to the three or four-pin fan header on the motherboard. 24-pin P1 connector The main motherboard power connector used today. As typical motherboard fan connector is a three or four-pin connector attached to the end of a PC fan’s wire. 8-pin motherboard auxiliary connector Used by an older ATX power supply and motherboard and provided +3.3 volts, +5 volts, +12 volts, 12 volts, and an optional and rarely used 5 volts 20-pin P1 connector Used by ATX Version 2. 20-pin P1 connector The main motherboard power connector used in the early ATX systems. ![]() An additional two groundable sense connections can be added to the side to tell the PCIe device that a 12.5A compliant power connector has been inserted. 8-pin motherboard auxiliary connector A connector used to provide additional 12 volt power to the processor. Pinouts for ATX computer power supply: 20 and 24-pin main connectors, 12V, SATA, PCI, floppy drive and other. The 12.5A version uses 3 12V power wires and 3 ground wires to carry current. The 3rd middle ground connection can be used to sense that the connection is plugged in. The 6.25A version only requires that two 12V power connections be present, and only two ground connections need to carry current. The 6 pin PCIe power connector comes in a 6.25A (75W) version and a 12.5A (150W) version. ![]()
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