8 pin to molex or 8 pin to 6 pin?

[Thuaxiz]

Hey I have a Gigabyte r9 380. The card needs an 8 pin connector, but my PSU only has a 6 pin and a couple of molex. Should I use an 8 pin to 6 pin converter or 8 pin to molex converter?

 

[InvalidError]

The lesser of two evils should be the 6-to-8 cable since the 8 pins connector still has only three 12V wires while the "molex" one is much worse since it would have only two assuming you feed both plugs from different cables from the PSU.

If your PSU does not have 8-pins (or 6+2) included though, there is a high probability it does not have adequate rating or quality to handle medium-high power GPUs.

 

[Archaic59]

The lesser of two evils should be the 6-to-8 cable since the 8 pins connector still has only three 12V wires while the "molex" one is much worse since it would have only two assuming you feed both plugs from different cables from the PSU.

If your PSU does not have 8-pins (or 6+2) included though, there is a high probability it does not have adequate rating or quality to handle medium-high power GPUs.

What about dual molex to 8-pin PCIe?
www.newegg.com/Product/Product.aspx?Item=9SIA39V1PT9271

 

[InvalidError]

What about dual molex to 8-pin PCIe?

That was exactly what I meant: a pair of "molex" connectors only provide two 12V and two GND wires total assuming you go through the trouble of using connectors from different strings from the PSU. A single 6 pins PCIe connector has three of each, so a 6-to-8 adapter would most likely be the lesser of two evils.

The only difference between the 6 pins and 8 pins PCIe connectors is that the extra two pins are shorted to ground to tell the [strike]PSU[/strike] GPU that the cable plugged into it is able to handle 13A. Neither the molex and 6-pin PCIe adapters can guarantee that. The adapter simply connects the extra pins on the 8 pins connector to ground to trick the GPU into accepting whatever you connected as a source suitable for 13A. Either way, unless you know what you are doing, you are flirting with disaster.