PHDGD Virtual VRAM Tool is a utility designed to "spoof" or increase the reported dedicated video memory (VRAM) on systems using Intel integrated graphics (iGPUs). It is part of the Professional HD Graphics Driver (PHDGD)
| Layer | Function | |-------|----------| | | Unmodified CUDA/OpenCL/Vulkan program | | PhDGD Shim Layer | Intercepts GPU API calls (LD_PRELOAD or DLL injection) | | Page Manager | Tracks page residency, LRU eviction, prefetching logic | | Transfer Engine | Handles CPU↔GPU PCIe transfers asynchronously | | Backend Storage | System RAM (primary swap area), optional file-backed swap | phdgd virtual vram tool
If the app crashes instantly, the tool failed to intercept memory calls (common with Vulkan or DX12 games). PHDGD Virtual VRAM Tool is a utility designed