苹果发布 M5 Ultra 顶配 Mac Studio
推荐指数 51.0 NO. 020 · 2026.10.29
发布2026/10/28Score52Comments71
简介
苹果正式发布搭载 M5 Ultra 芯片、512GB 统一内存的 Mac Studio，定位专业级 AI/ML 工作负载。对本地跑大模型的工程师而言，这可能是目前苹果生态里性价比最高的推理机器。
编辑判断
512GB 统一内存意味着单机能跑 300B+ 参数的量化模型，这是 NVIDIA 工作站方案难以匹敌的每美元内存带宽。但注意苹果 Neural Engine 对 Transformer 的优化仍落后于 CUDA 生态，PyTorch 的 MPS 后端在长序列注意力上常有隐性 bug。
如果你主要做 LLM 推理而非训练，且模型能塞进内存，这台机器的能效比和静音优势很明显；但如果你的 pipeline 依赖大量自定义 CUDA kernel 或需要多卡互联，还是要等实测数据再决定迁移成本。
社区反馈
意见分歧 62 条评论
核心争论：512GB顶配是否值得，还是两台256GB集群更具性价比
Bought it without looking too closely to make sure I got in before the rush (comes Nov 25-Dec 3 before my M5 Ultra 256GB which is supposedly shipping end of January). After taking a look the $11.5k premium over the 256GB might not be worth it. Gonna have to mull over the decision and possibly buy tw
Wish I had your economy for sure.
I saw "512GB" and knew deep down it means RAM, but SURELY nobody needs the same amount of RAM as I have total SSD space on my desktop, right? ...Right?