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What Is the Difference between EIP-1559 and the Legacy Gas Auction System?

Legacy was a volatile auction; EIP-1559 uses a dynamic, burned Base Fee plus an optional Priority Fee for predictability.
Greeks.Live05.11.25

What Is the Difference between EIP-1559 and the Legacy Gas Auction System?

The legacy system used a simple 'first-price auction' where users bid a single gas price, leading to high volatility and overpaying. EIP-1559 introduced a 'Base Fee' that is burned and dynamically adjusted based on network congestion, plus an optional 'Priority Fee' (tip) for the miner.

This creates more predictable fees and reduces overpaying.

How Is the ‘Base Fee’ Determined under Ethereum’s EIP-1559?
How Does ‘Price-Time Priority’ in an Order Book Compare to Fee-Based Priority in a Mempool?
Can a Transaction with a Low Gas Fee Still Be Front-Run?
What Is a Priority Gas Auction (PGA)?

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