I put Ollama on a 4 GB mobile GPU and got 2.5 — here's the VRAM math

This is a submission for the Gemma 4 Challenge: Build with Gemma 4 📎 Companion piece to my earlier post: I shipped local LLM features two months ago — production never ran them once. Same gemma4:e2b, same box — this one is the GPU offload follow-up. 🔬 TL;DR 2.5× faster, 10°C cooler — on a 4 GB laptop GPU that "shouldn't" fit the model. CPU only GPU hybrid Tokens / sec 17 39 Per-call latency ~5.5 s ~2.0 s CPU temp under burst hot −10 °C Layers on GPU 0 35 / 36...