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Black sleeved cable with three 8-pin male connectors merging into one 12VHPWR 16-pin connector

SMUGDESK

SMUGDESK 27.5 Inch PCIe 5.0 3x8Pin to 12VHPWR 600W GPU Power Extension Cord

SKU CH-TCVG-74635

A 27.5-inch PCIe 5.0 extension cable converts three 8-pin PSU connectors into a single 12VHPWR 12+4-pin plug, delivering up to 600W over 16AWG copper for RTX 3090Ti, 4070Ti.

  • Delivers 600 W to flagship RTX 40 series GPUs
  • Three 8-pin connectors merge into one 12VHPWR 16-pin plug
  • 16 AWG oxygen-free copper cuts resistance and heat under full load
  • 5 in length keeps cable routing tidy and airflow clear
  • Fits ASUS, EVGA, Seasonic and other full-modular PSUs

27.5-Inch PCIe 5.0 Power Extension

This 27.5-inch cable bridges a full-modular power supply and a modern graphics card. Three 8-pin male connectors combine into a single 12VHPWR 12+4-pin plug rated for 600 watts. The 16AWG oxygen-free copper cores reduce resistance and heat during sustained heavy loads. A flexible protective sleeve guards against abrasion inside the chassis.

Builders Upgrading to 12VHPWR GPUs

The cord suits anyone installing an RTX 3090 Ti, 4070 Ti, 4080 or 4090 into a system with an ASUS, EVGA, Seasonic or similar full-modular PSU. It eliminates the need for a native 12VHPWR cable from the power supply maker. Builders whose power supplies lack three spare 8-pin ports or who require a native 12VHPWR output should look elsewhere.

Sustained 600-Watt Delivery

Thick 16AWG conductors keep voltage drop low when the card draws maximum power for extended gaming or compute sessions. The sleeve resists heat softening and prevents connector overheating during continuous full-load operation. The 27.5-inch length allows clean routing without blocking GPU or case airflow, maintaining thermal performance over long periods.

How it compares

Measured against everything we stock in PC & Server Extension Cords, at today’s prices. Recalculated every night.

Price $23.99
Pricier than about 80% of the 401 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What power-supply connectors must my PSU provide for this 3x8Pin to 12VHPWR cable?

Your power supply needs three free 8-pin PCIe modular ports to feed the 16-pin 12VHPWR plug on the graphics card.

Will the 27.5-inch length reach an RTX 4090 mounted vertically in a full-tower case?

At 27.5 inches the cord spans most full-tower layouts, but measure your specific GPU-to-PSU path before ordering.

How can I confirm the 16AWG wires are delivering the full 600W without overheating?

Under load the connectors should stay cool to the touch and the GPU should report its rated power draw in monitoring software.

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