Intel ends SGX support after Diamond Rapids for TDX in cloud and AI
Intel announced on Friday it will stop supporting Software Guard Extensions (SGX) after its upcoming Xeon Diamond Rapids processors. The company will focus on Trust Domain Extensions (TDX) instead, which isolates entire virtual machines rather than just application enclaves. TDX is seen as more scalable and easier to deploy for cloud providers and enterprise workloads, including agentic AI…
Key points
- Intel stops SGX support after Xeon Diamond Rapids, focusing on TDX for cloud and AI workloads
- TDX isolates full virtual machines, unlike SGX’s application-level enclaves, easing migration for cloud providers
- Intel will add trusted I/O, post-quantum crypto, and attestation to TDX, with no release dates stated
SGX will remain supported for existing platforms into the early 2030s, giving customers time to migrate. Intel plans to expand TDX with features like trusted I/O, post-quantum cryptography, and stronger attestation. TDX is already available on major cloud platforms, with software vendors like Red Hat and VMware adding support. Intel’s shift reflects broader industry trends toward VM-level isolation over application-specific enclaves.
Intel to phase out SGX after Xeon Diamond Rapids in favor of TDX
Tom's Hardware · 12 October 2026
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