Solana boosts block compute capacity 66% to 100M CU, but "hot account" congestion remains
AI Market Summary
Solana raised the per-block compute unit limit from 60M to 100M, increasing parallel transaction capacity and reducing the share of block space a single hot account can consume. However, unchanged per-account write limits (12M CU) and data growth caps (100 MB) leave popular-account congestion risks intact for high-throughput DEX and liquidation flows. Lack of published pre/post metrics keeps the near-term performance impact uncertain.
Impact level
● Medium
Affected assets
SOL/USDT+1.08%
AI Insight · SOL/USDTAI Insight
● Neutral
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Solana raised its per-block compute unit (CU) limit to 100 million from 60 million on July 29, a 66.7% increase, according to CryptoSlate as cited by ChainCatcher. The change expands parallel processing capacity for unrelated transactions and reduces the share of block resources consumed by a single heavily used account from 20% to 12%.
Key constraints tied to popular accounts remain unchanged. The maximum compute that can be applied to writes on the same account per block is still capped at 12 million CU, and the account data increase limit stays at 100 MB. As a result, workloads that repeatedly write to one "hot" account—such as high-volume DEX activity or liquidation contracts—can still hit the same bottleneck.
The Solana team has not released before-and-after comparative data on confirmation rates, fees, block propagation, or replay performance following the upgrade.
