FormulaMod 12VHPWR PCIe 5.0 16-Pin (12+4) to 3x 8-Pin Adapter Cable, 16AWG, 17.7in / 45cm, 600W, with 12+4 Cable Combs

FormulaMod 12VHPWR PCIe 5.0 16-Pin (12+4) to 3x 8-Pin Adapter Cable, 16AWG, 17.7in / 45cm, 600W, with 12+4 Cable Combs

TL;DR: This 17.7 inch (45 cm) adapter terminates three standard PCIe 8-pin male outputs from the PSU side into a single PCI-e 5.0 16-pin (12+4) 12VHPWR connector on the GPU side, for Ada-generation cards including the RTX 3090 Ti, 4070 Ti, 4080 and 4090. The current-carrying conductors are 16 AWG with a...

Common Applications

This 17.7 inch (45 cm) adapter terminates three standard PCIe 8-pin male outputs from the PSU side into a single PCI-e 5.0 16-pin (12+4) 12VHPWR connector on the GPU side, for Ada-generation cards including the RTX 3090 Ti, 4070 Ti, 4080 and 4090. The current-carrying conductors are 16 AWG with a sleeved braid, and the cable is rated up to 600 W continuous load. Three dedicated 12+4-pin combs ship in the kit to keep the run flat near the connector.

Frequently Asked Questions

Q: Which GPUs is this cable compatible with?

A: Any card using the PCI-e 5.0 16-pin (12+4) 12VHPWR connector, including RTX 3090 Ti, RTX 4070 Ti, RTX 4080 and RTX 4090. RTX 50-series cards use the revised 12V-2x6 receptacle - check the listing if you need confirmation for a specific 50-series card.

Q: How many PSU 8-pin outputs are required?

A: Three unoccupied PCIe 8-pin (6+2) outputs from the power supply, ideally distributed across rails to balance the 600 W load.

Q: What is the total power rating?

A: 600 W continuous, matching the maximum 12VHPWR spec.

Q: What length is the cable?

A: 17.7 inches, equivalent to 45 cm end-to-end.

Q: Why are the cable combs included?

A: They keep the conductors flat and prevent tight bends near the 12VHPWR connector, which is the typical failure region for melting plugs.