Arctic Silver 5 is not conductive ( electrically only thermally )....kind of anyway. Better to be safe with ceramique. Thanks.
Not Electrically Conductive:
Arctic Silver 5 was formulated to conduct heat, not electricity.
(While much safer than electrically conductive silver and copper greases, Arctic Silver 5 should be kept away from electrical traces, pins, and leads. While it is not electrically conductive, the compound is very slightly capacitive and could potentially cause problems if it bridges two close-proximity electrical paths.)
High Performance Thermal Compound for the Enthusiast
MX-2 is a high thermal conductivity and low thermal resistance compound for components that require optimum thermal dissipation. It is ideally suited for use in CPU, GPU cooling and other applications between power semiconductor components and heat sinks where thermal conductivity is a major factor.