Flat Heat Pipe 3mm x 8mm x 300mm Copper Heatsink Pipe - Thin Fanless

In this review the Flat Heat Pipe from Bopaodao is evaluated as a simple, low-profile thermal upgrade for compact systems. It is best for hobbyists and DIY builders who need a thin, pure copper conduction path to move heat away from a CPU, GPU, or memory module without adding fans. The single biggest reason to buy is its 99% pure copper construction combined with a 3mm thickness and 300mm length that make it effective for passive heat spreading in cramped laptop, phone, or small form factor PC layouts.

Key Features

• Pure copper construction: 99% pure copper offers strong thermal conductivity to disperse chip temperature efficiently across a backplate or heatsink.
• Low profile dimensions: The 3mm x 8mm cross section and 300mm length allow routing through narrow gaps inside notebooks and small enclosures.
• Thin and flexible processing: The manufacturer can bend and flatten the pipe on request, enabling custom routing to match system geometry.
• Passive cooling compatibility: Designed to connect to existing radiators or backplates, it improves heat dissipation without adding noise from fans.
• Manufacturing tolerances: Small deviations in thickness and length are noted, which sets realistic expectations when integrating into tight assemblies.

Who It's For

The Flat Heat Pipe is ideal for DIY electronics modders, laptop repairers, and small form factor PC builders who need a long, thin thermal tube to transfer heat from chips to a larger heatsink or backplate. It works well where space is constrained and a fanless or low-noise solution is desirable, such as thin notebook retrofits or compact media PCs.

It is less suitable for users who expect a drop-in, plug-and-play cooler or those who need active cooling components; this is a component for integration rather than a finished heatsink assembly. If you need a full fan-equipped cooler or a formatted product for immediate desktop installation, look elsewhere.

Pros & Cons

Pros

• High thermal conductivity from near-pure copper for effective passive heat transfer.
• Thin 3mm profile and long 300mm length give flexibility for routing in tight builds.
• Custom processing options let buyers request bending and flattening to fit unique layouts.

Cons

• Sold as a single pipe piece; integration requires basic thermal assembly skills and compatible mounting solutions.
• Minor manufacturing tolerances mean exact fit should be checked before precision installations.

Specifications

Brand	Bopaodao
Material	99% pure copper
Thickness	3mm (T 0.01in) with +/- 0.2mm deviation
Width	8mm (W 0.32in)
Length	300mm (11.81in) with +/- 0.5mm deviation
Application	GPU, CPU, VRAM, RAM, laptop and mobile passive cooling

Our Verdict

The Bopaodao Flat Heat Pipe is a practical, cost-effective component for anyone building a fanless or low-profile cooling solution. Its near-pure copper makeup and long, thin form factor make it especially useful for constrained spaces and custom routing, and the option for custom bending adds real value for DIY installers. It represents good value when used as part of an integrated heatsink or backplate rather than as a standalone cooler.

Frequently Asked Questions

Can this pipe be bent to fit a custom layout?
Yes, the seller offers bending and flattening services by request so the pipe can be processed to specific routing needs.

Is this ready to use as a complete cooler?
No, this is a single heat pipe intended to be integrated with a backplate or heatsink; mounting and thermal interface materials are required separately.

What tolerance should I expect?
Thickness may vary by about 0.2mm and length by about 0.5mm, so allow for small deviations when planning installations.