This Cooler DRAWS 545W!!? Bad Cooling Ideas #2

This video tackles the controversial topic of extreme thermoelectric cooling by building a 545 watt Peltier cooling module and attempting to push it to work at a scale far beyond typical consumer setups. It begins with a frank recap of prior experiments where Peltier cooling performed poorly compared with traditional water cooling, highlighting the high power draw and questionable efficiency. The hosts explain the motivation behind a custom, oversized cooling block designed to spread heat across a large surface instead of focusing cooling on a small CPU die, a key engineering consideration in heat transfer. They introduce a PID temperature controller to manage the Peltier device and prevent condensation by modulating power delivery, emphasizing the practical risks of running such setups near electrical components. Early on they sketch the plan for a full water cooling loop and a rough enclosure, while acknowledging the sketchy nature of the build and the potential safety hazards. The initial solidworks flow simulations show the anticipated behavior: a modest two-degree improvement on flow, with the Peltier temperature rising to a steady state after the first minute. As the assembly progresses, the team discusses block design details, mounting strategy, and the need for a robust bottom copper plate to maximize thermal transfer, all while aiming to prevent edge overheating of the TEC module. They proceed to wire up a complex control box and attempt to assemble the radiator and fans, explaining the choice of a larger radiator configuration and the challenges of integrating high current components inside a compact enclosure. The video documents a tense but methodical soldering and tapping sequence, including the risky use of an EPS power connector adapted to a PCIe receptacle for higher current delivery, which is shown as a non-ideal but instructive hack. After wiring and testing, they observe initial success with temperatures dropping and the system briefly sustaining cooling, only to encounter repeated failures as the cooling loop and control circuit struggle to keep up with the heat load. In the climactic troubleshooting phase, the team experiments with a variable power supply to push the TEC harder, revealing dramatic temperature swings, eventual overheating, and a return to a throttled state that underscores the fundamental limits of TEC on CPU cooling. The verdict they reach is clear: despite ambitious intent and DIY engineering talk, TEC cooling for a high-power CPU is impractical, costly, and fraught with reliability and safety concerns. The video closes with a candid reflection on the learning experience and a plug for Squarespace as a platform for creators, stressing that the takeaway is about the value of experimentation as well as the boundaries of what is feasible in home-built cooling systems.

Topics · engineering · hardware · electronics · technology · science