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The Apple M1 Ultra is an ARM-based system on a chip (SoC) designed by Apple. Developed for the Mac line of computers, the M1 Ultra was introduced by Apple during a special event on March 8, 2022.[1]


The M1 Ultra features twice the capabilities of the Apple M1 Max with 20 CPU cores, including 16 high-performance units and 4 high-efficiency units. It also features 32 Neural Engine cores capable of up to 22 trillion operations per second. The M1 Ultra also contains two Thunderbolt 4 / USB4 controllers which can support twice as many ports as the M1 Max. The M1 Ultra is available in two versions, with 48 or 64 GPU cores.[1]

The first computer to offer the Apple M1 Ultra as an option is the Mac Studio.[2]


DRAM must be ordered in advance in 64 or 128 GB configurations as they are part of the M1 Ultra's SoC package.[2][3]


On March 8, 2022, Apple senior VP of hardware technologies Johny Srouji revealed that the M1 Max included a previously undisclosed interconnect feature called UltraFusion, which allowed two of the dies to be packaged together to create the M1 Ultra, with twice the computing power.[1] The silicon interposer is stated to be able to handle over 10,000 low-latency signals for an interprocessor bandwidth of 2.5 TB per second.[2] The combined total die size is estimated to be 840 mm2.[4]



  1. 1.0 1.1 1.2 Apple Event — March 8 by Apple, YouTube. 2022-03-08.
  2. 2.0 2.1 2.2 Apple unveils M1 Ultra, the world’s most powerful chip for a personal computer, Apple Inc. 2022-03-08.
  3. Customize your Mac Studio, Apple Inc. Archived 2022-03-08.
  4. The M1 Ultra: Apple’s big leap forward in chip design by Jonny Evans, Computerworld. 2022-03-09.

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