Solana block capacity rose from 60 million to 100 million compute units on July 29, a 66.7% increase that gives unrelated transactions more room without changing the separate cap governing its busiest accounts.
Compute units, or CUs, measure computational work performed by transactions. The block limit caps the aggregate CUs a leader can include before the block is full.
The on-chain feature account identifies SIMD-0286 as active at slot 435,888,000, at the start of epoch 1009, while the activation block timestamps that slot to July 29. The change raised the block limit by 66.7% mathematically, which the Solana Foundation presents as 66%.
The Solana Foundation said 11.2% of blocks produced between the July 22, 2025 activation of the 60 million-CU limit and the latest increase used at least 56 million CUs.
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