That's probably too small. My mini-a's heat sinks are approx 150mm x 430mm x 50mm per channel at 1 amp per channel. It runs very warm.
A way to test if it is too hot- if you can hold your hand on the heat sink for a few seconds without discomfort it is ok. If you can't hold your hand on the heat sink at all, even for 2 seconds, it's too small a heat sink.
Hope this helps,
Vince
A way to test if it is too hot- if you can hold your hand on the heat sink for a few seconds without discomfort it is ok. If you can't hold your hand on the heat sink at all, even for 2 seconds, it's too small a heat sink.
Hope this helps,
Vince
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