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Black sleeved 12VHPWR extension cable with gold-plated 12+4 pin connector and three 8-pin plugs, 30cm length

BUCIER

BUCIER 16AWG 12VHPWR Extension Cable 30cm Black

SKU CH-A3SA-0QZ4K

A 30 cm 16 AWG sleeved extension converts three 8-pin PSU cables to a 12+4 pin 12VHPWR connector for RTX 3090 Ti and 40-series cards up to 600 W

  • Product colorBlack

Color Black

  • Connects existing 3×8-pin cables to 12+4-pin GPU without PSU replacement
  • Gold-plated terminals and UL1007 16AWG wire deliver stable 600 W transmission
  • Dense PET sleeve resists wear and heat while holding routed shape
  • 30 cm length with transparent combs keeps build tidy in tight cases
  • Supports RTX 3090 Ti and 40-series cards from 500 W to 1300 W PSUs

12VHPWR Extension Cable for High-End GPUs

This 16AWG extension cable converts three 8-pin modular power supply outputs into a single 12+4 pin connector compliant with the 5.0 PCIE standard. It targets builders installing RTX 3090 Ti or RTX 40 series graphics cards without replacing an existing power supply. The 30cm length and included transparent cable combs support tidy routing inside the chassis.

Upgrade Path from Triple 8-Pin to 12VHPWR

The cable replaces the need for a native 12VHPWR power supply by adapting three 8-pin cables already present in many 500W to 1300W units. The jump is worth it when your PSU lacks the new connector but delivers sufficient wattage; the adapter is rated for 600W stable output, covering the typical 450W draw of an RTX 3090 Ti and higher demands of RTX 40 series cards. Gold-plated terminals and UL1007 wire ensure reliable power delivery.

Verify PSU Modular Cables

Confirm your power supply uses modular 8-pin PCIe cables and can spare three ports for this adapter. The PET-sleeved 16AWG wire is stiffer than fabric sleeving, so check that the 30cm reach and bend radius suit your case layout and GPU connector orientation. Ensure the total system power draw stays within your PSU's rated capacity.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 71% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Product colorBlack

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Questions about this item

How much clearance does the 30 cm extension with PET sleeve and transparent combs need behind the graphics card?

The cable measures 30 cm (11.8 in) end-to-end; the high-density PET sleeve is stiffer than cotton braid but holds its bend, so allow roughly 4–5 cm of depth behind the 12+4-pin connector for a clean 90-degree route.

Which PSU connectors must be free to plug the three 8-pin ends into a modular power supply?

You need three unused 8-pin (6+2) PCIe modular ports on the PSU; insert each fully until the latch clicks — the common mistake is seating only the 6-pin portion and leaving the +2 pins floating.

When should the 16 AWG UL1007 gold-plated extension be inspected or replaced?

Inspect the gold-plated terminals and PET sleeve for discoloration, cracking, or melted insulation after any GPU upgrade or if the PSU trips; replace the cable immediately if any conductor is visible or the combs no longer hold the wires in shape.

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