6-pin PCIe power extender cables

Note: this post focuses on the dilemma of extending 6-pin PCI cables, not splitting!

If you’re building a mining rig with the 6-pin PCIe risers, then you’re probably going to need an extender to connect both the GPU & riser off a single cable with 2x 6-pin connectors from the power supply.

Most of the 6-pin power cables included with premium power supplies have lengthy cables and they usually split into 2x 6-pin or 1x 8-pin + 1x 6-pin connectors at the end:

6-pin PCIe Cable
PCIe power cable cable splits into 2x 6/8-pin PCIe connectors

You can see from the above pic, that cable splits into 2x 6-pin connectors. This makes sense, since some graphics cards have 2x 6-pin connectors.

It’s also worth mentioning that the length of the cable between each 6/8-pin connector is relatively short – usually the power connectors are together on the GPU:

GPU with PCIe connectors
GPU with 2x 6-pin PCIe connectors

Riser card power dilemma

When you start building your rig and decide perhaps, “I’ll use 1x 6-pin connector for the GPU and 1x 6-pin for the riser card” – that is where you will run into problems.

The cable is too short to connect to both the GPU and riser card off a single split cable- it just won’t stretch:

6-pin riser cable too short
Outlined in red is the split 6-pin cable.. It can’t stretch to power the riser 

Extender to the rescue

Oulined in yellow is the extender cable to power the riser

Not only does the extender cable make it easy to power riser and GPU off a single power supply cable, it also enables flexibility when connecting risers and GPU.

The example below; a single PCIe power cable was used from the power supply (that splits into 2x 6-pin connectors), and then an extender was added so the split 6-pin cable could be connected to the riser sitting above the GPU below – this connection wouldn’t have been made possible without the extender.

1st Mining Rig

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