Another thought I’ve had on a smallish pfSense would to go the boutique chassis route, such as a Velka 3. A standard ITX board would be supported then, along with a socketed CPU. With a flexible PCIe riser two different PCIe adapters can be used at x8 each. Cooling would be great since it would support 80mm/120mm fans which can be undervolted. Would vastly be more expensive than repurposing a thin client though.
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