Ethereum’s core developers have agreed to raise the protocol-level per-block gas cap from 30 million to 45 million ahead of Fusaka Devnet 3’s stress tests. Client teams are now working to integrate this change by the end of July, enabling more realistic transaction batches and a robust preview of mainnet scaling upgrades.
- Why the 45 Million Gas Limit Matters
- Client Implementation & Timeline
- Preparing for Devnet 3 Stress Tests
- Next Steps & Ecosystem Impact
- Conclusion
Why the 45 Million Gas Limit Matters
The gas limit governs how much computation and data can be included in each block. Upping it by 50% directly translates into larger block payloads, benefiting L2 rollups and high-throughput DeFi activity. However, this also amplifies execution workload on validator clients and risks widening attack surfaces if not properly benchmarked.
Client Implementation & Timeline
On the All Core Developers Consensus Call, Prysm, Nimbus, Lodestar, and Lighthouse all signed on to the bump. Prysm targets deployment within one week of approval, Nimbus describes its release as “imminent,” Lodestar merged the change into its CI workflows, and Lighthouse completed its merge ahead of schedule. Teams agreed on a flexible end-of-July goal with weekly progress check-ins.
Preparing for Devnet 3 Stress Tests
The 45 million limit is central to Fusaka Devnet 3’s “happy-path” stress test planned for July 21–22, 2025. By simulating heavier blocks, developers aim to measure block propagation latency, transaction throughput stability, and identify bottlenecks in I/O, decoding, and state access. Early data from Devnet 2 showed that without this increase, stress tests would under-represent mainnet conditions.
Conclusion
With the 45 million gas cap in place, Fusaka Devnet 3 is poised to deliver critical insights into client performance under near-mainnet conditions. Whether this test validates the network’s resilience or uncovers areas for improvement, it will shape the path toward Ethereum’s next generation of scaling upgrades.
If you find any issues in this blog or notice any missing information, please feel free to reach out at yash@etherworld.co for clarifications or updates.
Related Articles
- Ethereum Fusaka Devnet 0 Coming Soon
- Will Fusaka Be Ready in Time? Vitalik's 2025 Vision
- Glamsterdam: The Next Upgrade After Fusaka
- Ethereum Developers are Rethinking Transaction Signatures & Authority
- Censorship Resistance Vs Scalability
Disclaimer: The information contained in this website is for general informational purposes only. The content provided on this website, including articles, blog posts, opinions, and analysis related to blockchain technology and cryptocurrencies, is not intended as financial or investment advice. The website and its content should not be relied upon for making financial decisions. Read full disclaimer and privacy Policy.
For Press Releases, project updates and guest posts publishing with us, email to contact@etherworld.co.
Subscribe to EtherWorld YouTube channel for ELI5 content.
Share if you like the content. Donate at avarch.eth.
You've something to share with the blockchain community, join us on Discord!