Those silver caps are Nichicon HD series; the other two have Nichicon-style vents and a fragment of "Nichicon" is recognizable on at least one. If those are the "HM" series caps you referred to, they are indeed Nichicon, as "HM" is not a Rubycon series. Both are aqueous electrolyte series; there was a known bad run of HM series parts some time in early 2004, IIRC.
PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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The heatsink network on that board is designed to work with an air-cooled processor, so that the airflow from the CPU cools the rest of the heatsinks. If you're using water cooling, my recommendation would be to invest in some good case fans! Perhaps a side-panel fan, blowing in?
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