On the channel of the famous overclocker Roman Hartung, known under the pseudonym der8auer, a review of an unusual cooling device from the German company Wieland appeared. This is AIO (All-in-One) liquid cooling without a pump.
This system uses the thermosiphon principle for passive heat exchange. Due to the temperature difference in a closed circuit, natural movement of the refrigerant occurs. This system does not require an additional pump. Similar systems are used in the domestic sphere for water heating systems, refrigeration equipment and other things.
While the Wieland device is only a prototype, it is already showing good performance. This cooler has a cooling unit that is installed on the processor, and a radiator unit with two 120 mm fans. The prototype is compatible with AMD AM5 and Intel LGA1700 processors. To evaluate the real capabilities of such a cooler, der8auer compared it with the AIO Corsair iCUE H150i (2 fans) on the Ryzen 9 7950X processor.
Under gaming loads, the Wieland cooler performed no worse than the Corsair. But under load in Cinebench R23, the Corsair cooler was 8 degrees more efficient. This is a small difference in operating temperatures, but it already affects the maximum processor frequencies – with Wieland the processor worked at lower frequencies with less power.
But in general, this is a working solution that has the potential for minor design improvements. An important advantage of such a system is the absence of pump noise, which can be a significant argument for some users. Therefore, this cooling system has certain prospects and may go into mass production in the future.