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10Gb/s Ethernet: using mini-heatsinks with a 10GBASE-T SFP+ module

The article discusses using mini-heatsinks with 10GBASE-T SFP+ modules to manage heat in 10Gb/s Ethernet setups. It explains that these copper-based modules run hot and that adding a low-profile heatsink can improve thermal performance and prevent throttling or failure, especially in constrained environments like switches or small form-factor appliances.

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  • A user attached mini-heatsinks to a 10GBASE-T SFP+ module in their home network switch, achieving a temperature reduction of about 3.5°C. The discussion also highlights that older 30-meter-rated SFP+ modules (like the MikroTik S+RJ10 with a Marvell chip) run hotter than newer 100-meter-rated Broadcom-based modules, which could be a future upgrade.