The8auer achieves reduction of 5ºC in the AMD Radeon VII temperature

The Der8auer professional overclocker replaces the graphite plate of the AMD Radeon VII with liquid metal and lowers the temperature by 5ºC.

We have recently tested the AMD Radeon VII, a thermally inefficient graphics card. The graphics card has a graphite plate between the DIE and the heat sink to improve the contact surface. We tried to change the thermal paste and the PETA-graphics. Now, Der8auer has changed the graphite plate and used liquid metal. The improvement was quite small, so low that it was only able to lower the temperature by 5ºC.

The8auer achieves reduction of 5ºC in the AMD Radeon VII temperature

For this test Der8auer used Hitachi Chemical TC-HM03 heat conducting paste. The thermal compound offers a conductivity between 25-45W/m*K. Technically, it is one of the best liquid metals on the market, even if it is based on synthetic diamonds. This type of component has an important problem, namely that liquid metal is electrically conductive and must be very careful in its application.

There is hardly any difference to the graphite that AMD has implemented between the GPU and the dissipator. Because the surface of the nozzle is not uniform, the AMD solution opted for this solution, which is thicker than the thermal paste. It seems that on some points, with one component or another, there is no good contact, and this is a serious problem.

Before applying the liquid metal, AMD used nail varnish to protect the SMD components in the silicon board. This is an important step in the use of liquid metal.

There are risks and high costs to improve the Radeon VII temperature by about 5ºC. The only interesting thing is that it has made it possible to exceed the base frequency of 1709MHz to 1733MHz to reach 1780MHz in boost mode.