BNB Chain’s Maxwell Upgrade Slashes Block Times, Supercharges Performance

By José Oramas July 01, 2025 In BNB, dApp

Source:AdobeStock

BNB Chain’s Maxwell hard fork cut block times to under a second and added new proposals to boost validator coordination, cycle length, and consensus speed.
The upgrade balances faster block generation with stability, cutting gas limits in half to prevent network bloat and boosting validator sync for better uptime and reliability.
Developers were advised to adapt DApps to the new speed, as the chain’s faster blocks may break time-based logic.

The BNB Chain, an already fast and consistent network, has supercharged its performance following its Maxell upgrade.

Maxwell is more than a speed upgrade. It’s a performance layer for the next generation of builders. Sub-second blocks unlock better UX, smarter infra, and tighter coordination across the chain.

BNB Chain Developers.

The Maxwell Hardfork is going live on BSC mainnet.

This isn’t just another upgrade—it’s a technical leap forward for faster blocks, better validator coordination, and smoother network performance.

Here’s what’s changing 🧵👇 pic.twitter.com/TFWQR0DZ0j
— BNB Chain Developers (@BNBChainDevs) June 26, 2025

Let’s break it down. The Maxwell upgrade brings new key changes under three new Binance Evolution Proposals (BEPs).

First, the BEP-524 doubles each validator’s TurnLength from 8 to 16 blocks. Fewer switches between validators mean tighter coordination and smoother blocks. Then we have the BEP-563, which doubles the epoch length from 500 to 1,000 blocks, giving the network longer cycles to process and settle.

Last but not least, BEP-564, which tweaks the consensus layer to refine how validators agree on transaction order and integrity while running faster.

Shortly afterwards, the BNB token took some nice gains in the daily chart, although moderate, mostly due to the broader sluggish sentiment gripping the entire crypto market this week.

BNB/USDT. Source: TradingView/CoinGecko.

Balancing Speed and Steadiness

The Maxwell upgrade is a symbolic nod to renowned physicist James Clerk Maxwell, whose work balanced complex forces in physics (i.e., electromagnetism). The fork aims to do the same for BNB Chain: faster block generation but steady performance through consistent validator performance.

One direct throttle is the gas limit cut: blocks will handle 35 million gas instead of 70 million. Smaller gas caps keep block size in check, limit runaway state growth, and hold the line against network congestion.

Communication gets a boost too as new propagation rules push blocks across validators in just under 400 milliseconds. Sync improvements will help validators that go offline get back in line much faster, strengthening network uptime and trimming lag.

Developers are on the hook too. The BNB Chain team warned DApp builders to test under the faster schedule, refactor any logic pinned to 1.5-second intervals, and check all time-based functions. “If something breaks, it’s probably your code — not the chain,” they said.