Applying thermal paste to VRMs can help improve heat dissipation.
Applying thermal paste to VRMs can help improve heat dissipation.
Never encountered this application before. However, if the VRM includes a heatsink, it likely features a thermal pad. I’m uncertain about its impact on VRM temperatures.
VRMs typically employ thermal pads instead of thermal paste since they are bonded to the VRM with minimal force, unlike GPUs or CPUs where paste spreads more extensively
Thermal paste and pads help move heat away. When a heat sink isn't present, a non-conductive paste can work if pads aren't available. Instead of placing a heat sink under VRMs, you can mount a fan directly on them to keep them cool. The same applies to memory kits.
The issue lies in the VRM being made up of many individual parts, which might differ slightly in size compared to the PCB. This inconsistency can cause paste to fail, leaving gaps between the heatsink and components in certain areas. Thermal pads are preferred since they are thicker and can conform well, helping to fill these gaps. Even tiny spaces—less than a millimeter—can lead to problems.
Thermal pads aren't great for efficient heat dissipation. Overclocking can be competitive, but heat sinks are usually left out of the design. Boards often handle high temperatures, though VRMs can manage them. I think pads would be superior in most cases. Or add a fan directly on the VRM area. The heat sink might be too much.