FAST RPC Brings Millisecond Feedback to Ethereum Transfers

Written by Aaron S.,

Editor-In-Chief

Last Updated: October 23, 2025

Key Takeaways

Primev’s FAST RPC tool gives Ethereum users a near-instant signal, under 200ms, on whether a transaction is likely to be accepted soon;
Preconfirmation offers quick feedback but doesn’t replace final transaction inclusion, which still follows Ethereum’s usual process;
FAST RPC helps users transfer ETH, use apps, and mint NFTs more smoothly, which makes Ethereum feel faster without changing its core system.

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Ethereum ETH $3,855.69 users can receive near-instant feedback when sending transactions using a new tool created by Primev, a blockchain infrastructure company.

Their new service, called FAST RPC, allows users to know within 200 milliseconds whether their transaction is likely to be accepted into the next block on the network.

This early signal, called preconfirmation, does not mean the transaction is finalized, but it indicates that it will be included. The actual inclusion still follows Ethereum’s usual process.

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FAST RPC connects wallets to the Ethereum network and helps send transactions or use apps that run on Ethereum. It also supports activities such as transferring ETH, interacting with smart contracts, and creating digital collectibles (NFTs).

Murat Akdeniz, the founder of Primev, shared a live demonstration on X of a fast ETH transfer using MetaMask.

The transfer was preconfirmed in 377 milliseconds and ended up in the same block. He noted that his team has been developing this tool for over two years to improve Ethereum’s speed.

Compared to other blockchain systems that confirm transactions in around the same time, such as Sui SUI $2.42 , this new tool helps Ethereum feel quicker without changing how the system works.

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