Please consider the risks of the following vulnerability before deciding whether or not to undervolt: https://plundervolt.com/
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In my experience (working in the field at Anjuna), SGX and other Confidential Computing are quietly used on the server-side in enterprises a lot. It's a part of defense-in-depth, often to protect critical secrets and cryptographic keys, or the systems that manage them.
I agree though, we're all getting slightly off topic