I know that Nvidia’s been implementing attestation for the PCI links to AI GPUs recently, and iirc USB has supported it for a while now (though I’m not sure whether USB-IF has formalized it). I would be shocked if there isn’t already a DDR standard for same coming up in 6 or 7. It’ll take a while to for all this reach the consumer market but the alternative is, as you correctly observe, the gradual decline of trustworthiness of not only attested Win11 gaming PCs but also gaming consoles — but emptying the cesspool of the software cheaters in the meantime remains a sensible step to take.
See also:
https://ieeexplore.ieee.org/document/6258448 (2012)
https://memlab.ece.gatech.edu/papers/DSN_2023_2.pdf (2023)
https://pcisig.com/blog/ide-and-tdisp-overview-pcie%C2%AE-te... (2025)
https://docs.trustauthority.intel.com/main/articles/articles... (2026)