# Upgrading Bitcoin Core from 27.0 to 32.1

*30 October 2026 · Finance, Infrastructure, Performance*

Was running Bitcoin Core 27.0. Here's what changed by 32.1:

- AssumeUTXO on mainnet, snapshots up to block 965k
- Default dbcache 450MB → 1GB on 4GB+ RAM
- Block inputs now fetched from disk in parallel. Devs measured 1.18x to 3x+ faster IBD

Upgrading this weekend.

[View original on X](https://x.com/mohitdotdev/status/2116108415651266903)