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Nexus switch vs 3650/3750

Could someone explain to me what a nexus switch can do that a 3650 switch cannot? Ex. Features (software, hardware)
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Nexus is focused primarily as

Nexus is focused primarily as a DC switch.   Therefore, one of the most obvious functions Nexus does not support is Power over Ethernet (PoE).   One feature Nexus family of switches has that is unique is deep packet buffers.  This means high-speed and continuous traffic from servers will benefit more if servers are connected into a Nexus switch compared to a Catalyst switch.

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