Solana increased its per-block compute unit ceiling from 60 million to 100 million on July 29, a 66.7% jump, according to CryptoSlate. The change gives unrelated transactions more room to run in parallel and reduces the share of block space that a single hot account can consume, cutting that figure from 20% to 12%.
The upgrade does not remove the main bottleneck tied to heavily used accounts. Solana still keeps the per-block write limit for the same account at 12 million CU, and the cap on account data growth remains 100 MB. That means transactions that need to write to one hot account at the same time can still run into the same constraint, even after the broader block-level compute ceiling was raised.
CryptoSlate said this issue remains relevant for workloads such as high-volume decentralized exchanges and liquidation contracts, where many transactions may compete to touch the same account within a block. The report also noted that Solana officials have not published before-and-after operating data on transaction confirmation rates, fees, block propagation, or replay behavior following the adjustment.
Solana raised its per-block compute unit limit from 60 million to 100 million on July 29, a 66.7% increase, according to CryptoSlate.
The adjustment creates more parallel execution room for transactions that are unrelated to one another. It also lowers the share of a block that a single hot account can occupy, reducing that figure from 20% to 12%.
Even so, the network's cap on writes to the same account within a block remains 12 million CU. The limit on account data growth also stays at 100 MB. As described in the report, that leaves the core congestion issue around hot accounts unresolved.
If a large number of transactions need to write to the same heavily used account, they still run into that ceiling. CryptoSlate pointed to cases such as high-volume DEX activity or liquidation contracts.
No official before-and-after comparison data has been provided on transaction confirmation rates, fees, block propagation, or replay following the change.
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