The Jump Crypto team has initiated a proposal to remove the fixed limit on computational blocks in the Solana network to significantly enhance its performance and transaction processing speed.
This is reported by Business • Media
Proposal Details and Technological Changes
Jump Crypto, which is developing the high-performance Firedancer client for Solana, has suggested implementing SIMD-0370. This change involves completely removing the current limit of 60 million computational units (CU) per block, allowing the block size to scale according to the validator’s hardware capabilities. From now on, the number of transactions that can be processed in a single block will depend on the specific validator’s capabilities.
The goal of the initiative is to encourage validators with outdated hardware to transition to more modern and powerful solutions. It is expected that this will enable the Solana network to achieve a significant increase in speed and reduce transaction finalization times.
Assessments, Risks, and Implementation Context
The Jump Crypto proposal emerged after nearly unanimous approval of the Alpenglow protocol, which is set to begin testing in December, with implementation expected shortly after its launch. The Alpenglow update, announced in May 2025, aims to reduce transaction finalization times in Solana from 12.8 seconds to just 150 milliseconds, marking the largest update in the protocol’s history and significantly enhancing the network’s resilience.
The research firm Anza, which has separated from Solana Labs, explained the rationale behind the proposed changes as follows:
“This creates a performance cycle: block producers pack more transactions to earn more fees. Validators who miss blocks lose rewards, so they upgrade their hardware and optimize their code. Better performance in the network means producers can safely push the limits further.”
It is worth noting that back in May 2025, Jito Labs CEO Lukas Bruder proposed raising the limit to 100 million CU under SIMD-0286, but the new proposal from Jump Crypto suggests a complete removal of restrictions.
However, concerns have arisen within the community. Engineer Achiles Singhania pointed out potential risks of centralization in his GitHub post. According to his assessment, larger validators will be able to quickly upgrade their hardware and remain in the network, while smaller players may be forced out of the market:
“Another type of centralization we might see is that larger validators will continue to upgrade their hardware, while smaller ones who cannot afford the upgrade will be forced to exit the market. As a result, we may end up with fewer large validators.”
Overall, the Jump Crypto proposal is viewed as part of a broader strategy to enhance Solana’s resilience and diversify its validator ecosystem. It is worth mentioning that the Firedancer solution has been undergoing testing on the Solana mainnet since September 2024.