MarvinLabs vram_fit for ChatGPT

org.marvinlabs/vram-fit

Will a QLoRA fine-tune of gemma-3-4b-it fit your GPU? Verdicts from measured AMD and NVIDIA probes.

client:ChatGPT transport:streamable-http tools:3

Install MarvinLabs vram_fit in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://marvinlabs.org/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs