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My friend and I water cooled a compaq prebuilt with a homemade water-cooler made of hardware store parts. Specs and temps in comments. : r/pcmasterrace
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Phase-change sub-zero diy 2.5kW cpu cooler - first test with an old Athlon x64 at 4.2Ghz. So far working. Videos later following... : r/pcmasterrace
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