Update README.md

README.md

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 ## Repositories available
 
 * [4bit GPTQ models for GPU inference](https://huggingface.co/TheBloke/stable-vicuna-13B-GPTQ).
-* [4bit and 5bit GGML models for CPU inference](https://huggingface.co/TheBloke/stable-vicuna-13B-GGML).
-* [Unquantised 16bit model in HF format](https://huggingface.co/TheBloke/stable-vicuna-13B-HF).
+* [4-bit, 5-bit and 8-bit GGML models for CPU (+CUDA) inference](https://huggingface.co/TheBloke/stable-vicuna-13B-GGML).
+* [Unquantised float16 model in HF format](https://huggingface.co/TheBloke/stable-vicuna-13B-HF).
 
 ## PROMPT TEMPLATE