Flat Heat Pipe 1mm x 9mm x 120mm Copper Heatsink Pipe - Thin Passive

In this review the Flat Heat Pipe from Bopaodao is assessed as a compact, passive cooling component for DIY laptop and small-form-factor projects; its single biggest selling point is the 99% pure copper construction in a very thin 1mm profile that makes it usable where clearance is tight. The reviewer found it best suited to add-on heat dissipation between a chip and a backplate or secondary heatsink, and notes that the manufacturer offers bending and flattening services for custom routing. This is a practical part for modders who need a low-profile, conductive thermal bridge.

Key Features

• Material: Made of 99% pure copper for strong thermal conductivity and effective chip temperature dispersion.
• Low profile: At about 1mm thick the pipe fits under thin backplates and inside tight laptop or phone housings where larger heat pipes will not.
• Length and width: The 120mm length and 9mm width provide a usable span for connecting small heat sources to a remote sink or backplate.
• Custom processing: The seller offers bending and flattening services so the pipe can be formed to specific routing needs for a cleaner installation.
• Passive cooling: This is a fanless solution intended to improve passive thermal dissipation when paired with a heatsink or metal backplate.

Who It's For

This flat heat pipe is aimed at DIY technicians, laptop repairers, and hobbyists who need a thin thermal bridge between a CPU, GPU, VRAM or other chip and a secondary sink or backplate. It is especially useful in ultrabook or compact builds where vertical space is extremely limited and a conventional round heat pipe cannot be used.

It is not intended as a standalone cooler for high-power desktop CPUs without additional heatsinks and mounting hardware, and users who require complete enclosed cooling solutions or active fan assemblies should look elsewhere. This is a component for integration into a larger thermal design.

Pros & Cons

Pros

• Very thin 1mm thickness makes it suitable for constrained spaces and low-profile retrofits.
• High copper purity supports efficient heat transfer from small chips to remote sinks or backplates.
• Custom bending and flattening options help achieve a precise fit in unusual layouts.

Cons

• Thickness and length tolerances (up to 0.2mm and 0.5mm deviation) mean exact dimensions can vary slightly, which may matter for very tight fits.

Specifications

Brand	Bopaodao
Material	99% pure copper
Thickness	1mm (0.04 in) - tolerance about 0.2mm
Width	9mm (0.35 in)
Length	120mm (4.72 in) - tolerance about 0.5mm
Use	Passive thermal bridge for laptop, phone, GPU, CPU, VRAM

Our Verdict

The Bopaodao flat heat pipe is a solid value for anyone building or repairing compact systems who needs a thin, highly conductive thermal link; its pure copper construction and available custom shaping make it a practical choice for improving passive dissipation. Buy it if you need a low-profile heatsink tube to bridge chips and backplates, but account for small dimensional tolerances when planning tight installations.

Frequently Asked Questions

Can this be bent to fit a specific route?
Yes. The seller provides bending and flattening services and can process the pipe to specific routing requirements when requested.

Is this pipe suitable for high-power desktop CPUs on its own?
No. It is intended as a thermal bridge in passive or hybrid cooling setups and should be used with additional heatsinks or mounting hardware for high-power processors.

How precise are the dimensions?
Typical tolerances are up to 0.2mm in thickness and about 0.5mm in length, so allow a small margin in very tight fits.