苹果在新款 Mac Studio 中推出 M5 Ultra 芯片 1。该芯片首次在 M 系列 SoC 中采用 UltraFusion 技术，将两颗 M5 Max 连接构建为四芯片架构，将芯片间带宽提升至超过 4.4 TB/s，连接密度超过 6 倍 1。M5 Ultra 搭载高达 512GB 统一内存，统一内存带宽高达 1.2 TB/s，比 M3 Ultra 高出 50% 1。
在计算核心方面，M5 Ultra 包含最多 36 核 CPU 和最多 80 核 GPU 1。其中，CPU 包含 12 个超级核心和 24 个性能核心，单线程性能比 M3 Ultra 高出至多 1.25 倍，多线程性能高出至多 1.3 倍 1。图形性能比 M3 Ultra 高出最多 40% 1。此外，该芯片配备 32 核神经引擎，GPU AI 峰值计算性能较 M3 Ultra 最高可提升 4.5 倍，较 M1 Ultra 更高 6 倍以上 1。媒体引擎包含 H.264、HEVC、四路 ProRes 编解码引擎及硬件加速 AV1 解码引擎 1。M5 Ultra 面向专业及 AI 工作负载，支持在设备端运行和微调大型 AI 模型，并配合 Core AI、Core ML、Metal 等开发者框架调用硬件资源 1。
Apple has officially introduced the M5 Ultra chip in its new Mac Studio, marking the first time the company has utilized UltraFusion technology in an M-series SoC to connect two M5 Max chips into a four-chip architecture 1. This configuration supports up to a 36-core CPU, comprising 12 super cores and 24 performance cores, alongside an 80-core GPU and up to 512GB of unified memory 1.
The chip's unified memory bandwidth reaches 1.2 TB/s, representing a 50% increase over the M3 Ultra, while the UltraFusion technology boosts inter-chip bandwidth to over 4.4 TB/s with a connection density more than six times greater 1. The CPU offers up to 1.25 times the single-thread performance and 1.3 times the multi-thread performance compared to the M3 Ultra 1. Additionally, the GPU AI peak compute performance increases by up to 4.5 times over the M3 Ultra and more than 6 times over the M1 Ultra, while graphics performance is up to 40% faster than the M3 Ultra 1.
Designed for professional and AI workloads, the M5 Ultra features a 32-core Neural Engine and a media engine that includes H.264, HEVC, four ProRes encode and decode engines, and a hardware-accelerated AV1 decode engine 1. The chip also enables the on-device running and fine-tuning of large AI models, leveraging developer frameworks such as Core AI, Core ML, and Metal to utilize hardware resources 1.
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