GPU HBM inside the Compute Protected Region (access-fenced on Hopper, hardware-encrypted on Blackwell); memory-mapped registers hidden by the BAR0 decoupler in CC mode

Name: GPU HBM inside the Compute Protected Region (access-fenced on Hopper, hardware-encrypted on Blackwell); memory-mapped registers hidden by the BAR0 decoupler in CC mode
License: https://aidatacenterguide.com/terms#intellectual-property

~90% / ~99.78%observed

Value kind	observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range.
Scope	The Hopper configuration studied in arXiv 2507.02770 enforces CPR by hardware access control without runtime HBM encryption; Blackwell adds hardware-accelerated HBM encryption.
As of	2025
Source	arXiv 2507.02770; NVIDIA WP-12554
Review	checking…review by 2026-09-20 · standard cadence
Recorded changes	last 2026-06-29
Claim id	gpu-hbm-inside-the-encrypted-compute-protected

Where the guide uses it

Not quoted in a chapter yet; it is kept in the curated register.

← Full numbers register — every date-stamped figure in the guide, with revision history.