Sui vs Solana: Comparing Transaction Speed and Fees

Sui and Solana both aim for very high transaction throughput and very low fees, but they get there through fundamentally different architectures — Sui through an object-centric data model that lets simple transactions bypass full network-wide ordering, and Solana through a parallel execution engine running atop a single, strictly sequenced chain.

Both chains market themselves on speed, and both routinely appear in "fastest blockchain" comparisons, but their actual mechanisms — and their actual real-world behavior under load — differ enough to matter for anyone choosing between them.

Architectural approaches

Solana processes all transactions through a single, unified chain, using proof-of-history to timestamp events before consensus and the Sealevel runtime to execute non-conflicting transactions in parallel. Every transaction still goes through the same global consensus process, just with parallel execution inside it.

Sui represents assets as independent objects with explicit owners. A transaction touching only objects owned by a single account — like a straightforward SUI transfer — can be validated and finalized without going through the chain's full, shared consensus process at all, since there's no risk of conflicting with another user's simultaneous transaction. Only transactions touching "shared" objects (like a shared liquidity pool everyone can access) require full consensus ordering — see our Sui token explainer for more on this object model.

Speed and finality compared

Feature	Sui	Solana
Simple transfer finality	Near-instant (bypasses full consensus for owned objects)	Full consensus required for every transaction
Shared-state transaction finality	Requires full consensus (like a shared pool)	Same process regardless of transaction type
Historical network stability	Newer, less production history under extreme load	Documented history of multiple network outages during peak demand
Fee level	Sub-cent typically	Sub-cent typically
Language/runtime	Move (object-centric)	Rust (Sealevel parallel runtime)

Real-world throughput vs. marketed numbers

Both chains' marketed throughput figures are generally theoretical maximums achieved under controlled benchmark conditions, not sustained real-world numbers — see our broader explainer on why theoretical and real TPS diverge. Solana in particular has a longer production track record than Sui, including several well-documented network outages during periods of extreme transaction demand — a real availability risk that a raw speed comparison doesn't capture. Sui is newer and hasn't yet been tested by comparably extreme demand spikes over as long a period, so its resilience under true worst-case load is less established either way.

Which design wins for which use case

Sui's object model gives it a genuine architectural advantage for applications dominated by simple, owner-only transactions — a payments app or a game handing out unique in-game items, for instance, benefits directly from bypassing full consensus. Solana's single-chain parallel execution model is arguably better suited to applications with heavy, unavoidable contention over shared state — a busy central limit order book or a heavily traded liquidity pool — since its architecture doesn't structurally distinguish between owned and shared state the way Sui's does, meaning it doesn't lose a relative advantage in exactly the scenarios where Sui's speedup shrinks.

Risks common to both

Both chains are newer than Ethereum and have smaller, less battle-tested validator sets and dApp ecosystems, meaning both carry more platform-level risk than longer-established chains regardless of their throughput advantages. Neither chain's speed or fee level says anything about the smart contract risk of specific applications built on top of them — evaluate individual protocols' audit histories independently, and check current, real chain activity rather than relying on either chain's own performance marketing.

Bottom line

Sui and Solana pursue similar goals — high throughput, low fees — through genuinely different architectures, and each has scenarios where its specific design offers a real advantage. Solana has the longer track record (including a documented history of outages), while Sui's object model offers a structural edge for simple, owner-only transactions. Evaluate based on your specific application's transaction pattern rather than either chain's marketed benchmark numbers.