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> The M1 Ultra processor is “another game–changer for Apple silicon,” Apple says, describing it as “the world’s most powerful chip for a personal computer.”

Because there are physical limitations to creating a larger die than that used in M1 Max, Apple developed a groundbreaking architecture solution: M1 Ultra is actually two M1 Max chips joined together using a custom die–to–die interconnect technology called UltraFusion, which provides 2.5TB/ sec of low–latency interprocessor bandwidth between the two dies — over four times the bandwidth of the leading multi–chip interconnect technology. It also draws much less power than a motherboard–based solution, Apple says.

As a result, M1 Ultra is nearly 8x faster than the original M1, with “industry–leading” performance per watt. M1 Ultra’s 20–core CPU with 16 high–performance cores and 4 high– efficiency cores delivers 90% higher multi–threaded performance than the fastest available 16–core PC desktop chip in the same power envelope. The 64–core GPU — 8x the size of M1 — has faster performance than even the top PC GPU available, while using 200 watts less power.

Memory bandwidth increases to a massive 800GB/sec, more than 10x that of the latest PC memory chip, and M1 Ultra supports up to 128GB of low–latency unified memory.

Best of all, M1 Ultra behaves like a single chip to software, so developers don’t need to rewrite their code to utilize two chips — macOS Monterey and modern apps will seamlessly scale to take full advantage of the new chip.