Abstract: The present invention relates to a module for cooling heat generating components, in particular for cooling electronic components of a computer device, such as processors, memory modules, storage modules, that may be arranged on a motherboard. The method according to the invention, comprises at least one heat generating component, a gastight chamber having an interior volume having arranged therein a heat-transfer fluid in liquid phase that is in heat transfer contact with at least part of the heat generating component and a heat exchanging surface for transferring heat from the heat-transfer fluid out of the gastight chamber, wherein the gastight chamber comprises a displaceable wall by means of which the interior volume of the gastight chamber is variable, and wherein the interior volume of the gastight chamber is in pressure equilibrating connection with the ambient pressure outside the gastight chamber via the displaceable wall of the gastight chamber.