Efficient Computer's Electron E1 CPU – 100x more efficient than Arm?

Efficient Computer's Electron E1 CPU claims up to 100 times better energy efficiency than ARM's best embedded cores through a spatial data flow architecture. It eliminates caches and out-of-order execution, using a grid of compute tiles with statically scheduled instructions and data routing. This approach aims to reduce energy wasted on data movement. The E1 supports C++ and Rust, with a custom compiler mapping code to the new architecture. While promising, real-world performance and developer adoption are yet to be determined.