Solana raised the utmost computation allowed per block from 60 million to 100 million compute items on July 29, a 66.7% leap that provides unrelated transactions extra room with out altering the separate cap governing its busiest accounts.
Compute items, or CUs, measure computational work carried out by transactions. The block restrict caps the mixture CUs a pacesetter can embody earlier than the block is full.
The on-chain function account identifies SIMD-0286 as lively at slot 435,888,000, at first of epoch 1009, whereas the activation block timestamps that slot to July 29. The change raised the block restrict by 66.7% mathematically, which the Solana Basis presents as 66%.
The Solana Basis stated 11.2% of blocks produced between the July 22, 2025 activation of the 60 million-CU restrict and the most recent enhance used at the least 56 million CUs.
Why a sizzling account can nonetheless hit its cap
SIMD-0286 modified solely the general block restrict. The utmost compute that may write to any single account inside a block stays 12 million CUs, whereas the utmost block accounts-data dimension delta stays 100MB. On this context, a sizzling account is shared writable state that many transactions attempt to replace, not essentially one dealer’s pockets.
That creates extra parallel capability. Transactions touching unrelated accounts can use the extra 40 million CUs, permitting a busy account to crowd out much less of the remainder of the block. Below the previous ceiling, one account’s 12 million-CU allowance represented 20% of the block. It now represents 12%.
The identical math doesn’t give a congested market extra capability. If many trades want to put in writing to the identical account, they nonetheless compete inside the 12 million-CU allowance. A state-heavy workload may also encounter the separate 100MB>
That distinction carries by to charges. Solana’s price documentation says an optionally available prioritization price will depend on a transaction’s requested CU restrict and CU worth and raises its chance of being scheduled. The upper block ceiling alone doesn’t present that precedence charges fell for transactions concentrating on the identical sizzling state.
Extra capability additionally doesn’t equal measured efficiency. The technical proposal warns that bigger blocks can take longer to execute, sluggish community progress and validator catch-up, and will trigger unexpected points for infrastructure past validators. These are design dangers, not studies of a present incident.
One Aug. 2 block recorded 25,373,012 consumed CUs, 1,328 processed transactions, and 1,069 profitable transactions. One block can’t set up network-wide outcomes or a before-and-after change.
The official improve supplies supply no post-activation before-and-after measurements for transaction inclusion, charges, block propagation, or replay. The improve subsequently establishes the next theoretical ceiling for mixture work. It doesn’t, by itself, exhibit 66% extra noticed throughput or eradicate the native bottleneck that merchants encounter when demand converges on the identical account.
