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Portal V2sub 2.0 Online Whisper Converter Docs
V2sub 2.0.2 Last Updated: 2026-10-14

GPU Acceleration (CUDA) Requirements & Troubleshooting

NVIDIA CUDA GPU requirements, VRAM guidelines per Whisper model, System Check diagnostics, and troubleshooting steps.

GPU Hardware Requirements

  • Windows: Supports NVIDIA CUDA GPUs (GTX 1060 4GB minimum; RTX 3060 8GB+ recommended for large-v3 and large-turbo models).
  • macOS: Optimized for Apple Silicon (M1 / M2 / M3 / M4).

How to Verify GPU Acceleration

Open Help → System Check inside V2sub 2.0:

V2sub 2.0 System Check

Troubleshooting

  1. NVIDIA GPU Shows "Unsupported": Download and install the latest driver from the official NVIDIA Drivers page, reboot your PC, and re-run System Check.
  2. Out of VRAM Errors: Switch to the medium or large-turbo model (which requires ~4GB VRAM), close other GPU-heavy apps, or select Force CPU in Config → Model Config.