# npcvram

> npcvram.com is a free, client-side VRAM calculator for AI NPC game mods (Mantella, CHIM, SkyrimNet for Skyrim; plus Fallout 4, Cyberpunk 2077, Bannerlord, RimWorld, Stardew Valley, Minecraft). It estimates whether a game plus a local LLM (GGUF, Q4_K_M/Q5_K_M/Q8_0, 4k–32k context) plus AI voice (TTS/STT) fit on one GPU, using: game preset + GGUF file + fp16 KV cache + 0.5 GB runtime + GPU TTS + GPU STT + 0.7 GB OS reserve, compared with 90 % of VRAM. Verdicts: LOCAL_OK, LOCAL_TIGHT, HYBRID (LLM in the cloud), CPU_VOICE_CLOUD_LLM. Example: Skyrim with 2K textures + Llama 3.1 8B Q4_K_M + 8k context + XTTS + Whisper base ≈ 16.2 GB. Estimates are ±1–2 GB; sources (mod docs, Hugging Face model files, benchmarks) were read on 2026-10-23.

- [Calculator](https://npcvram.com/#calculator)
- [Methodology & sources](https://npcvram.com/#methodology)
- [GPU tiers: what fits on 8/12/16/24 GB](https://npcvram.com/#gpu-tiers)
- [FAQ](https://npcvram.com/#faq)