RTX 5090 vs M5 Ultra: Which AI Powerhouse Wins?

Description

Apple's M5 Ultra Mac Studio is shipping, so here is how it compares to NVIDIA's RTX 5090 for running AI models locally. wTopics covered: - M5 Ultra vs RTX 5090 specs for local LLMs - Qwen3.8-27B benchmark: prompt processing and token generation - Multi-token prediction (MTP) speedups - 32 GB VRAM vs 256 GB unified memory - Tokens per second \= bandwidth / model size Resources: - Qwen3.8-27B: [https\://huggingface.co/Qwen/Qwen3.8-27B](https://huggingface.co/Qwen/Qwen3.8-27B) - RTX 5090 llama.cpp runs of Qwen3.8-27B Q4\_K\_M: [https\://huggingface.co/Qwen/Qwen3.8-27B/discussions/11