Update README.md (#2)

- Update README.md (18a6b50947332289c28271336641e194be9298e2)

README.md

@@ -4,6 +4,14 @@ base_model:
 - google/gemma-3-4b-it
 ---
 
-This is just a reupload of the gemma-3-4b-it-q4_0 model. It can be installed by `ollama run hf.co/kreier/gemma3`.
+This is just a reupload of the **gemma-3-4b-it-qat-q4_0** model. It can be installed by `ollama run hf.co/kreier/gemma3`.
+
+The reason for this reupload is the conflicting login requirements for huggingface when downloading the original model and the use of huggingface-cli. I'm logged in in both and have access, but the combination does not work.
+
+It is different from the general gemma3 model in that it is a 4B **instruction-tuned** version of the Gemma 3 model in GGUF format using **Quantization Aware Training** (QAT). The GGUF corresponds to Q4_0 quantization.
+
+See more details here: [https://huggingface.co/google/gemma-3-4b-it-qat-q4_0-gguf](https://huggingface.co/google/gemma-3-4b-it-qat-q4_0-gguf). It states:
+
+> Thanks to QAT, the model is able to preserve similar quality as `bfloat16` while significantly reducing the memory requirements to load the model.
+
 
-The reason for this reupload is the conflicting login requirements for huggingface when downloading the original model and the use of huggingface-cli. I'm logged in in both and have access, but the combination does not work.