Google's AI supercomputer outperforms Nvidia's A100 chip.

Google has revealed that its custom-designed Tensor Processing Unit (TPU) supercomputer is faster and more power-efficient than comparable systems from Nvidia. The TPU is now in its fourth generation and is used for over 90% of Google's work on artificial intelligence training. Google has strung more than 4,000 of the chips together into a supercomputer using its own custom-developed optical switches to help connect individual machines. The company said its chips are up to 1.7 times faster and 1.9 times more power-efficient than a system based on Nvidia's A100 chip that was on the market at the same time as the fourth-generation TPU.