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Black 16-pin male to three 8-pin female power adapter cable

SMUGDESK

SMUGDESK PCIe 5.0 16Pin Male to 3 x 8Pin Female Power Splitter Cord

SKU CH-4NKP-B50XF

Converts three PCIe 8Pin power outputs to a single 12VHPWR 16Pin connector for RTX 3090, 4070, 4080 and 4090 graphics cards

  • Converts three 8Pin PSU outputs into one 16Pin 12VHPWR connector for modern GPUs
  • Supports high-current delivery to RTX 3090 4070 4080 4090 series graphics cards
  • PCIe 5.0 12+4Pin male plug ensures stable power transmission for demanding gaming loads
  • Flexible wire design simplifies internal routing and improves airflow inside the case
  • Tool-free plug-and-play installation enables quick GPU power upgrades without extra hardware

12VHPWR 16Pin adapter for RTX GPUs

This cable converts three PCIe 8Pin power supply outputs into a single 12VHPWR 16Pin connector. It enables modern RTX 3090Ti, 4070Ti, 4080 and 4090 graphics cards to run on power supplies that lack native PCIe 5.0 cables. The adapter suits builders upgrading to high-end GPUs without replacing their existing PSU.

Sustained high-current delivery stability

The cord is built for stable power transmission under continuous heavy loads typical of gaming GPUs. It maintains reliable contact to support the high current demands of 12VHPWR-equipped cards during extended sessions. Proper seating of both connector ends is essential to prevent loose contact and overheating risks under sustained draw.

Tool-free installation with firm seating required

No tools are needed; simply plug the male 16Pin end into the GPU and the three female 8Pin ends into the PSU cables. The flexible wire construction eases routing inside the chassis for tidy cable management. The adapter only passes through power and cannot increase the PSU's rated output, so the supply must already meet the GPU's wattage needs.

Highlights

  • Converts three 8Pin PSU outputs into one 16Pin 12VHPWR connector for modern GPUs
  • Supports high-current delivery to RTX 3090 4070 4080 4090 series graphics cards
  • PCIe 5.0 12+4Pin male plug ensures stable power transmission for demanding gaming loads
  • Flexible wire design simplifies internal routing and improves airflow inside the case
  • Tool-free plug-and-play installation enables quick GPU power upgrades without extra hardware

Specifications

No published specifications for this item yet.

Questions about this item

Does the 12VHPWR 16Pin connector stay cool when the RTX 4090 draws full power all day?

The cable is built for stable high-current delivery to 12VHPWR graphics cards. Full insertion of both the 16Pin and each 8Pin connector prevents loose contact and overheating.

My power supply only has two 8Pin PCIe ports — can I still use this adapter for an RTX 4080?

No. This splitter requires three separate 8Pin outputs from the PSU to feed the single 12VHPWR 16Pin plug on the graphics card.

Will the flexible wire layout let me route the 16Pin end cleanly behind an older ATX 2.0 motherboard tray?

The flexible cable structure eases internal routing inside standard PC cases, helping you organise wires neatly and maintain airflow around the 12VHPWR connection.

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