One GPU, one release: make the support claim narrow

Steps
1. Identify the exact commercial GPU model and the actual device reported by the host. Do not substitute a neighbouring product name or infer support from shared architecture alone.
2. Open the versioned vendor matrix for the runtime you intend to use. Save its URL and the date consulted. A search snippet or an unversioned “latest” bookmark is not a reproducible record.
3. Check the OS and runtime separately. The example card appears in the hardware list; that does not add NixOS to AMD’s validated operating-system list. Mark an unlisted environment as not vendor-validated rather than as proven broken or proven supported.
4. Check the application’s own requirements and the compute API it actually uses. Successful PyTorch execution is not evidence that video decoding, OpenCL or Resolve works. Run a disposable application-specific test before altering the workstation you rely on.

Worked record
Chosen hardware: ____________________
Pinned document: ____________________
Hardware-list result: ____________________
Proposed host: ____________________
Application outcome: ____________________
Next evidence to collect: ____________________

Chosen hardware: AMD Radeon RX 7900 XTX
Pinned document: AMD Radeon native Linux compatibility, docs-7.1; consulted 14 October 2026
Hardware-list result: RX 7900 XTX is listed
Proposed host: NixOS: not established as vendor-validated by this matrix
Application outcome: DaVinci Resolve: not tested in this release
Next evidence to collect: OS/kernel, driver/runtime versions, application version, command/output and a small repeatable task

Keep “listed hardware”, “validated OS” and “observed application result” as separate fields. When reporting a failure, include the first boundary that fails and the raw error, with private paths removed. Do not install random runtime versions until the evidence record is complete. This matrix-reading exercise adds no GPU benchmark and makes no machine-specific installation claim.

AMD Radeon: versioned ROCm 7.1 Linux matrix — https://rocm.docs.amd.com/projects/radeon-ryzen/en/docs-7.1/docs/compatibility/compatibilityrad/native_linux/native_linux_compatibility.html