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Radeon RX Vega 64 has 8 GB HBM2 and a 295 W board specification for the documented configuration.
Radeon RX Vega 64 has 8 GB HBM2 and a 295 W board specification for the documented configuration. It predates RDNA, so historical graphics capability cannot establish current Cycles HIP support.
Official variants and the memory boundary
The table follows AMD materials for this model. It describes dedicated device memory, not system RAM. A “not verified” entry preserves a source gap; a neighboring configuration cannot supply the missing specification.
| AMD variant | Dedicated memory | Board power |
|---|---|---|
| 8 GB | 8 GB HBM2 | 295 W |
Establish the LLM software path
Radeon RX Vega 64 is absent from the checked ROCm Core SDK 10.1.0 GPU list. Support for a neighboring model cannot be transferred through a shared generation or a similar name. For a separate experiment, the llama.cpp build documentation describes a Vulkan backend. That route requires a suitable driver, detection of the actual device, and validation of the selected GGUF; Vulkan in a specification does not establish that every operation works. Save tensor-placement logs and compare output with a reference run before concluding that the GPU is actually involved. This is not a claim of current official ROCm support for this card.
A practical scenario for this model
Imagine an archived project once computed on Vega 64 and an attempt to add a current model. Recover the old renderer, application release, and driver first: “it worked before” does not describe the present software route. A separate LLM experiment requires a validated backend, device detection, and saved reference file. The old rendering profile cannot establish compute compatibility for the new model. If the experiment cannot execute a required operation, neither 8 GB capacity nor HBM2 changes that result. A useful outcome can be a documented device limitation and preserved archive; it does not have to become a promise of a universal modern GPU machine. This approach keeps historical evidence meaningful without silently extending it to unrelated software.
Validate Blender Cycles separately
Vega predates the RDNA 1 HIP hardware floor in the Blender Cycles 5.2 LTS manual. It is therefore not a current Cycles HIP target; historical compute support or a ROCm LLM experiment cannot establish renderer eligibility.
Distinguish the old project working from current Blender support in the archive record. A previous image or driver message cannot override the current HIP RDNA floor.
Preserve a machine-level acceptance record
The table gives AMD board-power specifications, not measured whole-computer consumption. Check the power supply, connectors, card dimensions, and airflow path for the actual system separately. Board power cannot establish inference speed.
Preserve the documented Vega 64 configuration with 295 W rather than substituting another liquid-cooled or partner board value. Keep historical application versions separate from the experimental modern LLM profile.
The acceptance artifact should connect board identity, software versions, model revision, and the workload actually exercised. After any of those changes, the old result describes its original run rather than establishing compatibility of the new configuration.
Related reading
Make llama.cpp automatic fit settings reproducible; Idle render farms: assessing a second GPU workload; NVIDIA and AMD GPU catalogue for LLM inference and server rendering.