Ollama Library · gemma3
Can I run medgemma?
MedGemma is a collection of Gemma 3 variants that are trained for performance on medical text and image comprehension.
4.3B parameters128K contextimagetextHealth AI Developer Foundations Terms of Use4 builds
medgemma system requirements
Memory needed at 4K context, counting model weights, KV cache, compute buffers and runtime overhead. Download sizes come from the official Ollama registry.
| Build | Quantization | Download | Memory needed |
|---|---|---|---|
| medgemma:4b | Q4_K_M | 3.1 GB | ~4.8 GB(est.) |
| medgemma:4b-it-q8_0 | Q8_0 | 4.6 GB | ~7.0 GB(est.) |
| medgemma:27b | Q4_K_M | 16.2 GB | ~23.6 GB(est.) |
| medgemma:27b-it-q8_0 | Q8_0 | 27.5 GB | ~39.8 GB(est.) |
Figures marked (est.) approximate the KV cache because this model's architecture details are not published. They are indicative rather than exact.
How to run medgemma locally
- 1.Install Ollama for Windows, macOS or Linux.
- 2.Run this in a terminal:
ollama run medgemma:4b - 3.The weights download on first run, then an interactive prompt opens.
Frequently asked questions about medgemma
- How much VRAM do I need to run medgemma?
- At 4K context, the smallest published build of medgemma (Q4_K_M) needs roughly 4.8 GB of GPU memory once weights, KV cache, compute buffers and runtime overhead are counted. Bigger quantizations and longer context windows need more. It can also run partly or entirely on the CPU using system RAM, more slowly.
- Can I run medgemma without a dedicated GPU?
- Yes, but slowly. Without a GPU the model runs on the CPU using system RAM, which usually means a few tokens per second rather than dozens. You would need at least 4.8 GB of free RAM for the smallest build.
- How big is the medgemma download?
- The smallest published build is 3.1 GB. There are 4 builds in total, the largest being 27.5 GB. Leave some extra free disk space beyond the download itself.
- How do I run medgemma locally?
- Install Ollama, then run "ollama run medgemma:4b" in a terminal. The weights download on first use and an interactive session opens.
Will medgemma run on your PC?
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Model data from the official Ollama registry · verified 13/09/2026