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README.md

@@ -43,8 +43,9 @@ more details, including on how to concatenate multi-part files.
 | [PART 1](https://huggingface.co/mradermacher/TheProfessor-155b-i1-GGUF/resolve/main/TheProfessor-155b.i1-Q4_K_M.gguf.split-aa) [PART 2](https://huggingface.co/mradermacher/TheProfessor-155b-i1-GGUF/resolve/main/TheProfessor-155b.i1-Q4_K_M.gguf.split-ab) | i1-Q4_K_M | 93.0 | fast, medium quality |
 
 
-Here is a handy graph comparing some lower-quality quant types (lower is better):
+Here is a handy graph by ikawrakow comparing some lower-quality quant
+types (lower is better):
 
-![image.png](https://cdn-uploads.huggingface.co/production/uploads/645ce413a19f3e64bbeece31/dEiT6xDvxyANdetzVG1tX.png)
+![image.png](https://www.nethype.de/huggingface_embed/quantpplgraph.png)
 
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