Apple says that M5 Pro and M5 Max use an “all-new Fusion Architecture” that welds two silicon chiplets into a single processor. Apple has used this approach before, but historically only to combine two Max chips together into an Ultra.

  Apple’s approach here is different—for example, the M5 Pro is not just a pair of M5 chips welded together. Rather, Apple has one chiplet handling the CPU and most of the I/O, and a second one that’s mainly for graphics, both built on the same 3nm TSMC manufacturing process.