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Black 12VHPWR 12+4Pin male connector splitting to three 8Pin PCIe female connectors on braided cables

SMUGDESK

SMUGDESK 12VHPWR 12+4Pin to Triple 8Pin Power Splitter Cord

SKU CH-XNCG-WWP3Q

Converts a PCIe 5.0 12VHPWR 12+4Pin port into three 8-pin PCIe connectors for RTX 3090 Ti, 4080 and 4090 graphics cards

  • Converts PCIe 5.0 12VHPWR input to three 8-pin GPU connectors
  • Heavy-gauge copper wiring reduces voltage drop under full-load gaming
  • Locking-latch connectors resist loosening from chassis vibration or GPU weight
  • Direct plug-and-play installation with no driver required
  • Purpose-built for RTX 3090 Ti, RTX 4080 and RTX 4090 power delivery

PCIe 5.0 12VHPWR Power Splitter

This SMUGDESK adapter converts a single 12+4Pin PCIe 5.0 12VHPWR output from a modular power supply into three standard 8-pin PCIe female connectors. It is purpose-built to deliver stable current to high-power graphics cards such as the RTX 3090 Ti, RTX 4080 and RTX 4090 during full-load gaming or rendering operation.

For GPU upgrades needing native 12VHPWR

Builders upgrading to an RTX 3090 Ti, RTX 4080 or RTX 4090 with a modern modular PSU that already provides a native 12VHPWR port will find this cable a direct fit. It is not suitable for power supplies lacking a genuine 12+4Pin 12VHPWR output, nor for users attempting to adapt CPU EPS12V cables for GPU power.

Plug-and-play with locking latches

Each 8-pin connector features a sturdy locking latch that resists loosening from chassis vibration or heavy GPU weight, ensuring a firm seat during installation. Heavy-gauge copper conductors minimise voltage drop under load. Verify your PSU has a true 12VHPWR port before connecting; confusing it with an EPS12V cable can cause damage.

How it compares

Measured against everything we stock in Y-Splitter Power Cables, at today’s prices. Recalculated every night.

Price $14.99
Pricier than about 60% of the 433 comparable items (median $13.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Do I need a power supply with a native 12VHPWR 12+4Pin output to use this cable?

Yes, the cable plugs directly into a modular PSU's 12VHPWR 12+4Pin port. Do not confuse it with a CPU EPS12V connector.

Can I keep my existing 8-pin PCIe cables and use this adapter for an RTX 4090?

This adapter converts one 12VHPWR port into three 8-pin female connectors, replacing the need for separate 8-pin cables from the PSU.

How can I confirm the adapter is delivering stable power to my RTX 4080 under load?

The heavy-gauge copper wiring reduces voltage drop. Stable operation without GPU throttling or system instability indicates proper function.

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