Another fantastic build featuring the Noctua NH-P1, the humble Athlon 3000G, and the trusty Seasonic Fanless PX-450 power supply: "Solid-State PC - uses no moving parts whatsoever. No fans, no spinning drives. Runs Linux Mint. The memory and CPU were secondhand from eBay, which is why they were so cheap. I built the frame that everything is mounted to out of scrap wood I found laying around, plus a random metal U thing when I realized how big the cooler was. I mainly use my PC for web browsing and music making in LMMS, so I didn't need anything super powerful. I think this will do wonders for my power bill."
Source: PCPartPicker