Monday, March 4th 2024
Wieland Pumpless AIO CPU Cooler Tested
Wieland AIO CPU cooler is a prototype closed-loop liquid CPU cooler that lacks a pump, or any form of active coolant flow between the heat-source (the CPU block), and the sink (the radiator). The cooler works on the principle of thermosiphon, where the temperature differential between the source and sink cause coolant flow. This is essentially how solar water heaters work, as they drive coolant (water) between the heating panels and a storage tank. It's not like the cooler is without any moving parts, the radiator still needs ventilation from fans.
Der8auer tested a prototype Wieland cooler, and compared its cooling performance to that of a typical 240 mm AIO CLC (with a pump), on a machine with an AMD Ryzen 9 7950X processor with a 170 W TDP. During a 20-minute Cinebench R23 multithreaded stress test, the 240 mm AIO held temperatures to around 70 °C, while the Wieland AIO managed 78 °C. The power draw with the regular 240 mm AIO was higher, as the processor probably utilized the lower temperature to hold onto higher boost frequencies.
Sources:
Der8auer (YouTube), VideoCardz
Der8auer tested a prototype Wieland cooler, and compared its cooling performance to that of a typical 240 mm AIO CLC (with a pump), on a machine with an AMD Ryzen 9 7950X processor with a 170 W TDP. During a 20-minute Cinebench R23 multithreaded stress test, the 240 mm AIO held temperatures to around 70 °C, while the Wieland AIO managed 78 °C. The power draw with the regular 240 mm AIO was higher, as the processor probably utilized the lower temperature to hold onto higher boost frequencies.
17 Comments on Wieland Pumpless AIO CPU Cooler Tested
"Wielend AIO CPU cooler"
As a secondary HX heat pump it does work well (as proven by solar where you normally get 1kW/m2), it just doesn't work with CPUs which have about 1500x higher heat flux (up to 150W/cm2).
I am currently running 3x120mm in a push and 2x120 in a pull configuration, but it would be nice to know how much one sacrifyce with only 2x120 in e.g. a pull if there limited space for the GPU
As well, I wonder if radiator orientation matters too; the Ice Giant can only work in two orientations; vertically with the radiator allowing front-back airflow, and horizontally on a testbench, but can't work with the radiator facing up/down due to the flow design. I wonder if this will work in terms of being mounted on a front-intake, or even on a bottom intake (for those who still rotate/invert their mobos in certain case designs).