Qwen3.5-27B dense AI LLM model architecture performs about as good as Qwen3.5-122B-A10B MoE AI LLM model architecture: huggingface.co/Qwen/Qwen3.5-122B-A10B#benchmark-results.
And there is Qwen3.6-27B, but not Qwen3.5-122B-A10B.
Fitting a 27B UD-Q4_K_XL quant (17.9 GB) (huggingface.co/unsloth/Qwen3.6-27B-MTP-GGUF) requires 4.5 times less memory and nowhere near 128 GB RAM. All you need is 32 GB RAM + 6-8 GB VRAM GPU (basically any gaming PC/laptop).
More here:
"Your own ChatGPT, offline: AI without the cloud on your laptop":
notebookcheck.net/Your-own-ChatGPT-offline-AI-without-the-cloud-on-your-laptop.1341872.0.html
-> notebookchat.com/index.php?topic=315954.0.