| CPC H05K 7/2039 (2013.01) [H05K 7/20709 (2013.01)] | 20 Claims |

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1. A heat sink for cooling computing devices, comprising:
a plurality of fin stages arranged in spaced relation between an intake side and an exhaust side, the plurality of fin stages each including a plurality of fins extending along a flow direction;
wherein at least one of the plurality of fin stages is distinct in fin width and/or fin height from another one of the plurality of fin stages; and
a plurality of air separators extending from the intake side downstream to a corresponding one of the plurality of fin stages.
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