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Triple 8-pin to 16-pin 12VHPWR power adapter cable, flexible black sleeving with molded connectors

SMUGDESK

SMUGDESK 3 x 8Pin PCIe to 16Pin (12+4) PCIe 5.0 12VHPWR Power Splitter Cord

SKU CH-HFM8-C5R6V

Converts three PCIe 8-pin connectors into a single 12VHPWR 16-pin interface for RTX 3090 Ti, 4080 and 4090 graphics cards

  • Converts three 8-pin PSU cables to 12VHPWR 16-pin for RTX 3090/4080/4090
  • Heavy-gauge copper conductors minimise voltage drop under sustained full-load current
  • Reinforced moulded connectors with anti-loosening design reduce overheating risk from poor contact
  • Flexible jacket eases routing in large cases and custom GPU installations
  • Plug-and-play adapter lets existing modular PSU power latest-generation high-power GPUs

Target GPU power adapter

This triple 8-pin to 16-pin 12VHPWR adapter connects a modular power supply to RTX 3090 Ti, RTX 4080 and RTX 4090 graphics cards. It lets you run the latest high-power GPUs without replacing an existing quality PSU. The plug-and-play design suits builders upgrading to flagship NVIDIA cards.

Thermal and electrical stability

Heavy-gauge copper conductors minimise voltage drop under sustained full-load gaming and overclocking. Precision-moulded connector shells with anti-loosening locks reduce the risk of local overheating and poor contact at the GPU port. Flexible cable jacket aids tidy routing inside large chassis.

Three separate PSU cables required

Each 8-pin input must plug into its own native PCIe cable from the power supply; daisy-chained cables are explicitly forbidden to prevent overheating and hardware damage. The adapter provides no benefit if your PSU cannot supply three independent PCIe leads.

Highlights

  • Converts three 8-pin PSU cables to 12VHPWR 16-pin for RTX 3090/4080/4090
  • Heavy-gauge copper conductors minimise voltage drop under sustained full-load current
  • Reinforced moulded connectors with anti-loosening design reduce overheating risk from poor contact
  • Flexible jacket eases routing in large cases and custom GPU installations
  • Plug-and-play adapter lets existing modular PSU power latest-generation high-power GPUs

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the three 8-pin plugs to my modular PSU without causing overheating?

Each 8-pin input must plug into its own native PCIe cable from the PSU; never use daisy-chained cables.

What should I check over time to keep the 16-pin GPU connector reliable?

Inspect the reinforced shells for firm seating and watch for discoloration that signals poor contact.

At what point does the adapter become the bottleneck during long 4090 rendering sessions?

The 12VHPWR 16-pin output rating is the first limit reached under sustained heavy current draw.

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