Huamei HM 806 and HM 805 Thermal Paste Review – A new sub-brand from a well-known manufacturer and two new pastes

1 - Introduction and overview 2 - Microscopy and material analysis 3 - Performance and Measurement 4 - Pump-out, durability and conclusion 5 - Halnziye HY-P17 vs. DOWSIL TC-5888

Huamei is a new sub-brand of the Chinese coolant manufacturer Halznziye, which has been operating more in the background to date and has been set up specifically for the international market. While at first glance the name sounds like a typo by Huawei, Huamei is not a technology company with smartphone ambitions, but a specialized product line for thermal management materials that is clearly intended to set Halznziye apart from its previous OEM role. With Huamei, the company apparently wants to enter the same niche that brands such as Thermal Grizzly already successfully occupy with their sub-brands such as Polartherm: Performance-oriented paste for enthusiasts and overclockers at a lower price, preferably with recognition value and a clear differentiation from generic mass-produced goods. It is no coincidence that the brand image is reminiscent of established European names. It is a strategy that Polartherm is also pursuing.

However, Huamei has no routers, no AI chips and no blacklist – and perhaps that’s a good thing. So if you stumble across the “Huamei” label the next time you visit a retailer and wonder whether the shipment from Shenzhen will also include a new smartphone, you can rest assured: it’s just thermal paste. Probably even a pretty good one, but that’s what we want to find out today. And just like the Duronaut from Thermal Grissly and the P10 and P8 from Polartherm, Huamei offers two pastes below the Halnziye HY-P17: the HM806 and the HM805.

What you get

The Huamei HM806 is marketed as a high-performance paste with a stated thermal conductivity of 14.6 W/m-K and is clearly aimed at enthusiasts, overclockers and professional users who are looking for the lowest possible thermal boundary layer. The consistency is tough and heavily filled, which indicates a high concentration of thermally conductive fillers within the silicone-based carrier matrix. Although this makes processing a little more difficult, it ensures a stable layer at high contact pressure and prevents uncontrolled oiling or slipping in the long term.

Although the back of the packaging does not state any viscosity values or shear parameters, the haptic perception during application confirms a thixotropic behavior that is well suited for even pressure distribution on tower coolers or heat pipes. As an electrically non-conductive paste, it remains low-risk even with fine structures in the CPU or GPU area. The black retail packaging is neatly printed, multilingual and has a viewing window for the label, which shows the model name, thermal conductivity value and net weight (4 g).

The scope of delivery is extensive for this price range: Included are an application aid in the form of a spatula made of soft plastic, two thimble-like latex sleeves, a cleaning cloth with “Grease Cleanser” printed on it and a coated cardboard strip, which is presumably used for separation or as a base. The syringe itself is transparent with a black label and large model inscription, has a robust plunger and a transparent protective cap. Overall, the HM806 conveys a high-quality impression that clearly sets it apart from mass-produced OEM goods, despite its Chinese manufacturing origins.

The Huamei HM805 is designed as a smoother-running alternative to the HM806 and has a nominal thermal conductivity of 12.8 W/m-K. The formulation is visibly thinner. The formulation is visibly thinner, which allows a much more comfortable distribution on large or irregularly shaped contact surfaces. The lower filling level ensures that the paste adheres reliably even with lower contact pressure, making it ideal for applications with sensitive components, mobile devices or lightweight coolers. The difference to the HM806 lies less in the basic material quality and more in the handling, which reduces time and effort, especially in series applications with multiple application processes.

The back of the retail packaging contains the same typical marketing statements as the HM806, including a nanotechnology-based structure, high temperature stability, suitability for gaming and overclocking as well as electrical non-conductivity. The retail packaging corresponds to the HM806 in terms of design and material, but bears the label with the model number HM805, the same net weight of 4 g and the slightly lower thermal conductivity value.

The range of accessories is similar, but functionally extended: In addition to the spatula and cleaning cloth, there is also a soft silicone attachment in the bag, which can be placed on the syringe tip for pinpoint dispensing. The syringe body is also transparent, but has white lettering and a slightly different protective cap. This makes the HM805 more user-friendly overall without falling behind the HM806 in terms of quality, making it a practical solution for anyone looking for a good balance between thermal performance and workability.

Comparison HM806 vs. HM805

This is precisely why I have chosen these pastes today, because they are representative of a whole segment of new, significantly improved products that are often overlooked in the shadow of the established performance elite, but which fulfill a practical purpose. And that is sometimes more than some expensive representatives of the supposed upper class can afford.

	Material analysis and microscopy	Basic knowledge
Here you can find out why effective thermal conductivity and bulk thermal conductivity can be completely different in practice, what role the contact resistance between the surfaces and the paste plays and how thermal paste can be measured accurately. There is also a detailed description of the equipment, the methodology and the error tolerances.	You will learn how laser-induced plasma spectroscopy works and the advantages and limitations of the measurements. There is also high-resolution digital microscopy and analysis of particle sizes. This information is also used to estimate the long-term stability of a paste.	Anyone who has always wanted to know what is or is not in a paste and how these pastes are produced will find what they are looking for here. The basic article provides a better understanding of what is often sold for far too much money and sometimes with adventurous promises.