Polygon

Polygon PoS vs zkEVM: Speed & Throughput

Updated 2025
Performance Metrics

Polygon PoS Throughput

Polygon PoS has a theoretical maximum of approximately 7,200 transactions per second (TPS), though real-world throughput typically runs around 1,000 TPS during normal network conditions, with peaks during high-demand periods. Transaction finality on Polygon PoS takes roughly 1 minute for soft finality on the sidechain, while full Ethereum-level finality occurs when state checkpoints are submitted to mainnet — which can take longer. The high TPS makes Polygon PoS especially suitable for gaming, social media, and NFT applications.

Polygon zkEVM Throughput

Polygon zkEVM's throughput is somewhat lower than Polygon PoS due to the computational overhead of generating ZK proofs. However, it still represents a massive improvement over Ethereum L1's ~15 TPS. The key advantage of zkEVM is near-instant mathematical finality: once a validity proof is verified on Ethereum, the transaction state is immutably confirmed. There is no challenge period (unlike Optimistic Rollups) and no reliance on validator honesty — the mathematics guarantee settlement. This makes finality on zkEVM qualitatively stronger than on Polygon PoS.

Finality: PoS vs zkEVM

Transaction finality differs fundamentally between the two networks. Polygon PoS offers fast block confirmation (~2 seconds) but full finality depends on checkpoint submissions to Ethereum, introducing some delay. Polygon zkEVM offers near-instant provable finality: the validity proof submitted to Ethereum provides cryptographic certainty that cannot be reversed. For applications requiring absolute settlement guarantees — such as cross-chain bridges or large DeFi settlements — zkEVM's finality model is architecturally superior.

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