I've been thinking about passive cooling solutions, and while most discussions focus on using water systems with radiators to dissipate heat, I'm curious if there are any products or designs that can conduct heat solely through solid materials like copper or aluminum. The idea is to channel heat into a heat sink that could be emptied out, minimizing heat release into the room and creating a silent setup. Has anyone come across anything like this?
3 Answers
Yeah, there are certainly fanless PC designs out there! But be warned, they can lead to significant thermal throttling, meaning the performance drops. You’d likely face a trade-off where your hardware might run 30-40% less efficiently compared to a regular cooling setup. If you’re okay with that for silence and no moving parts, you might find it worth it, but typically, a good tower cooler or a water loop will be the better choice for most users.
You’re kind of veering off from traditional passive cooling here. While fanless systems do exist, they're less effective overall unless the hardware is uniquely designed for that. Most setups would struggle since hotspots on CPUs are only small, and a solid metal block will have resistance at that transfer point. To manage heat well without a fan, you need a hefty heat sink with plenty of surface area.
It sounds like you might be describing a standard heat sink setup, but without the fan. Typically, a solid chunk of metal absorbs heat and then heat pipes move that warmth to a bigger surface area, where a fan helps blow the heat away. If you want a larger design, it gets tricky since metal heat pipes don’t offer much flexibility. Some laptops use their casing for heat dissipation already!
Right! I actually ran a CPU without a fan for a while, just a big heat sink, and it worked fine. But it depends on how much heat your CPU generates.