100% Passively cooled case build

I have wanted to build a fully passively cooled computer case since I had my first Athlon Thunderbird 800 MHz. That time the fan noise was amazingly high, and manufacturers didn´t much care about the noise levels, and didn’t offer products for building a quiet PC. Nowadays a quiet PC is not much of a challenge to build, but totally silent?

Link: http://metku.net

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