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SOL news: Solana speeds up blocks by 17%, but transaction capacity stays the same

The change is the third SIMD-0525 stage and gives wallets and exchanges more frequent network updates while keeping Solana’s processing ceiling roughly unchanged.

  • On Friday, Solana cut its target slot time from 300 milliseconds to 250 milliseconds, making the network's clock run nearly 17% faster in the third advancement of SIMD-0525.
  • SIMD-0525 gradually reduces slot duration across staged phases, allowing Validators to assess network performance before each feature activation and preventing direct jumps to the final target.
  • Under SIMD-0525, resource limits fall proportionally with slot duration; the 250ms configuration corresponds to a 37.5 million compute unit limit, down from the 60 million baseline.
  • Users see faster transaction updates while Applications gain a more current network view; the fixed 432,000-slot Epoch duration now concludes in roughly 30 hours instead of 36 hours.
  • Solana developers have not scheduled the final reduction, while The Alpenglow consensus redesign targets roughly 150ms finality to replace TowerBFT in a separate upgrade path.
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Solana cuts the slot target time from 300 ms to 250 ms, accelerating the network by almost 17% without increasing the total transaction capacity

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BizToc broke the news on Friday, September 18, 2026.
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