One of the novelties that Apple has presented at the event has been the new M1 Ultra chip, which is a preview for the new Macs that will be able to enjoy its capacity and speed. It is two M1 Max chip together, hence its size, just double and just what Apple wants, double everything. 
Apple has added a fourth chip to its prolific M1 family of chips for the Apple Silicon processor. The new M1 Ultra rIt is the result of the combination of two M1 Max chip dies joined in a single chip.
After the initial M1 and the upgrade to the M1 Pro and M1 Max, Apple decided it wanted to add a fourth option for power users. Apple uses a die-to-die interconnect called UltraFusion to connect the two dies together. In effect, it's two M1 Max chips hooked together with 2,5 terabytes of bandwidth between the two.
This allows the M1 Ultra to function as one chip, rather than two. Naturally, you now also have access to 20 CPU cores, a 64-core GPU and 32 Neural Engine cores.
Memory support has also been increased, with the M1 Ultra supporting up to 128GB of unified memory. Memory bandwidth is also increased, up to 800GB/s, with the M1 Ultra now eight times faster than the original M1.
It is something incredible and the power and speed that it will be able to give to new computers will not be forgotten. On paper, the figures are dizzying but we assume that they will come true because that is what happened with the other chips. We'll have to wait for the real tests, but they will be amazing. It is not surprising that this new chip is intended for great professionals who need a lot of power.
