According to a press release, MegaETH achieves its scaling in two ways: through its “heterogeneous blockchain architecture, which boosts performance by allowing network nodes with different hardware configurations to specialize on specific tasks,” as well as a “hyper-optimized EVM execution environment that pushes throughput, latency and resource efficiency to hardware limits.”

https://www.coindesk.com/tech/2024/06/27/megalabs-behind-the-real-time-blockchain-raises-20m-led-by-dragonfly/