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Black sleeved 16-pin male to three 8-pin female PCIe 5.0 extension cable, 17.7 inches with combs

FormulaMod

FormulaMod 16Pin 12+4 to 3x8Pin PCIe 5.0 Extension Cable 17.7in

SKU CH-TB56-Z0F4D

A 16-pin PCIe 5.0 extension cable with three 8-pin connectors, 17.7 inches long, for RTX 3090, 4080 and 4090 graphics cards

Color Black

  • 16-pin 12+4 male to three 8-pin female connectors for RTX 3090, 4080, 4090 compatibility
  • 7-inch PCIe 5.0 extension adds reach without replacing the power supply
  • High-density 16AWG tinned copper conductors ensure stable power delivery
  • Durable nylon braided jacket with pre-bent design resists daily wear and tear
  • Three included cable combs enable clean routing and unified cable management

16-pin 12+4 PCIe 5.0 extension for RTX 3090

This 17.7-inch sleeved cable connects a 16-pin 12+4 male header to three 8-pin female connectors. It lets builders keep an existing modular PSU while powering RTX 3090, 4080 or 4090 graphics cards. High-density 16AWG tinned copper and a nylon braid are used for durability. Cable combs are included for tidy routing.

Sustained-load behaviour and connector safety

The extension adds length without replacing the PSU cables, so voltage drop depends on the original wiring quality. A secure fit on all three 8-pin plugs and the 12+4 header is essential to avoid hot spots under continuous draw. The pre-bent design reduces strain at the connector housing during long sessions.

Compatibility checks before ordering

Verify that your power supply provides three separate 8-pin PCIe outputs on modular ports. Confirm the graphics card uses a 16-pin 12+4 receptacle and that 17.7 inches of extra length fits your case routing path. This cable is an extension only and must not be plugged directly into the PSU.

Highlights

  • 16-pin 12+4 male to three 8-pin female connectors for RTX 3090, 4080, 4090 compatibility
  • 7-inch PCIe 5.0 extension adds reach without replacing the power supply
  • High-density 16AWG tinned copper conductors ensure stable power delivery
  • Durable nylon braided jacket with pre-bent design resists daily wear and tear
  • Three included cable combs enable clean routing and unified cable management

Specifications

No published specifications for this item yet.

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Questions about this item

Does the 16-pin 12VHPWR connector run hot when the GPU draws full power all day?

The extension uses 16 AWG tinned copper wire rated for the PCIe 5.0 specification, so it handles the current without excess heat under normal loads.

What existing PSU cables are required to plug this extension into a graphics card?

You need three 8-pin (7+1) PCIe modular cables from your power supply to connect to the extension’s female ends.

Will the 17.7-inch length reach a GeForce RTX 4090 mounted vertically in a mid-tower case?

At 17.7 inches the cable adds ample reach for most vertical GPU mounts while the included combs keep the three 8-pin tails tidy.

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