Ethereum developers have begun testing network blocks more than three times larger than today’s capacity, pushing trial gas limits toward roughly 200 million per block on test networks ahead of the Glamsterdam upgrade. If the experiments hold, Ethereum could narrow the raw throughput gap with Solana that has defined the smart-contract-platform rivalry for three years.
The tests, confirmed by core developers and reported by CoinDesk and Decrypt on October 18, target a block limit above three times the current effective ceiling of about 36 million gas. Blocks near 200 million gas were observed running on test infrastructure, a scale that would allow dramatically more transactions, more rollup data and more complex applications per block than mainnet has ever processed.
Why block size is suddenly the hottest number in Ethereum
For most of its life, Ethereum deliberately kept blocks small. The chain’s designers prioritized the ability of ordinary users to run a node and verify the network over raw capacity, betting that layer-2 rollups would absorb scalability demand. That bet produced a thriving rollup ecosystem, but it also left the base layer processing far fewer transactions per second than Solana, whose high-throughput architecture became the default home for meme coin frenzies and high-frequency decentralized exchange activity.
The new tests signal that the calculus is changing. Hardware has improved, client software is leaner, and the pressure from competing chains is real. By tripling the block limit, Ethereum could offer materially cheaper base-layer transactions while still keeping node requirements within reach — a middle path between maximal decentralization and maximal speed.
What Glamsterdam is trying to solve
Glamsterdam is the working name for Ethereum’s next major protocol upgrade, following the Fusaka release cycle. Unlike previous hard forks that focused on single headline features, Glamsterdam is shaping up as a capacity package: larger blocks, better data availability for rollups, and continued trimming of worst-case execution times so that bigger blocks do not translate into longer sync times for node operators.
The 200 million gas figure matters because it approximates the ceiling the network can reach without a fundamental redesign of how state is accessed. Beyond that level, engineers worry about state growth making pruned nodes and archive services significantly more expensive to operate. The test runs are, in effect, a controlled probe of where that cliff sits.
Can it help ETH catch up with Solana?
The competitive framing is not entirely fair — Solana processes thousands of transactions per second using a fundamentally different architecture — but market participants price the comparison anyway. Ethereum’s ecosystem still commands the deepest liquidity in decentralized finance, with Aave and other blue-chip protocols settling far more value than any competitor. What it has lacked is a compelling answer when consumer-facing applications suddenly need cheap, fast blockspace.
Larger blocks are not just about bragging rights. They directly cut the cost of rollup settlements, meaning layer-2 fees could fall further even as activity grows. They also give application developers headroom to build richer on-chain logic without gas costs becoming prohibitive — a constraint that has pushed many teams to alternative chains over the past two cycles.
The caution flags developers are raising
Test network performance does not guarantee mainnet results. Client teams have documented that bigger blocks increase the risk of reorgs under adverse network conditions and make block propagation more sensitive to bandwidth. The Glamsterdam specification process still has multiple milestones to clear, and no mainnet activation date has been set.
There is also an economic question. More blockspace generally means less fee revenue per transaction, and Ethereum’s fee-burn mechanism ties part of ETH’s supply dynamics to network congestion. A permanently cheaper base layer shifts the value-capture story even more firmly toward being the settlement layer for the rollup economy rather than a high-margin transaction processor.
Market context for the test results
The timing is uncomfortable for ETH holders. Ethereum traded near 2,350 USD on October 18, down roughly 3 percent on the day, underperforming Bitcoin’s modest slide and far from the 3,000 USD level bulls targeted earlier in the year. Solana held stablecoins worth about 15.5 billion USD, the third-largest concentration in the market, according to DefiLlama data cited by market analysts, a reminder of how much payment and trading activity has already migrated.
Ethereum still dominates total value locked and stablecoin supply, and spot Ethereum ETFs continue to attract long-term allocations even through recent outflow weeks. If Glamsterdam delivers visibly cheaper transactions without centralizing the node ecosystem, it would strengthen the argument that Ethereum can defend its core market while competitors fight for the throughput frontier.
For now, the honest summary is that Ethereum has moved from defending its block-size philosophy to stress-testing a new one. That shift alone is one of the most consequential protocol decisions since the merge to proof of stake — and the next few months of Glamsterdam testing will show whether the chain can grow into the speed expected of it without giving up the decentralization that made it the settlement layer of choice.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and crypto-related equities are highly volatile, and you can lose money quickly. Always do your own research before making investment decisions.
200m on testnet is a stress test. the headline number is the marketing part, client teams have basically said they expect to land closer to 100m first
200m gas blocks vs todays 36m is wild. just hope state growth doesnt price out home node operators again
thats exactly the tradeoff they keep debating. article barely touches how heavy archive nodes get at that scale
archive sync at 200m gas becomes a weekend job, home nodes are already priced out on disk alone. the repricing happened quietly years ago
home node disk is already an annual subscription at 36m gas. the 200m talk should ship with a hardware price list attached
the price list exists, its just denominated in exit nodes. anyone running a full sync at 36m gas already knows disk is the subscription fee nobody mentions
hardware price list lol. an archive node at 200m gas is a nas with a mortgage. history expiry better ship in the same fork or home nodes are cooked
We survived the 2021 gas limit fights. This feels different, the rollup data argument actually justifies bigger blocks now.
rollup blobs are the actual reason this time, agreed. but 36m to 200m in one jump still feels like theyre speedrunning the 2021 fight backwards
different until solana prints another outage and everyone remembers why l1 throughput worship is a trap lol
every solana outage thread gets this reply and it never ages badly lol. both are true, solana drops occasionally and eth state bloats forever
solana pressure showing up directly in the eth roadmap is new. three years of throughput trash talk finally produced a gas limit debate with actual numbers attached
36 million to 200 million gas is a wild jump. solana has been eating eth lunch on throughput for years, good to see them actually swing back
swinging back is generous, 36m to 200m on testnet while client teams still argue about history expiry. respect the ambition but let the fuzzing run for months first
letting the fuzzing run is right. jumping 36m to 200m in one hard fork would be reckless, my guess is they land somewhere near 100m first
agreed on the 100m landing zone, though even that assumes history expiry ships in the same fork. client teams wont triple gas on a promise
100m landing zone feels right, client teams have basically said they hate the full jump. and fuzzing catches the boring bugs, the scary ones only surface on three years of mainnet state
landing near 100m first is the sane path, but the solana throughput comparisons wont wait for a cautious fork schedule. the pressure cuts both ways
w take gary, high l1 fees were the whole reason solana even had an opening
flat price while eth quietly plans its biggest capacity jump since the merge is the most crypto thing on the calendar. solana pressure finally showed up in the roadmap
Testing on testnets is one thing. Mainnet with real state bloat and three years of history is another. Been burned by optimistic timelines before
^ exactly this. 200m gas blocks means archive nodes get brutal and sync times balloon. someone always pays for throughput
archive nodes are the tax base of eth and 200m blocks would balloon them overnight. history expiry shipping first is a precondition, not a nice to have
glamsterdam quietly becoming the most important eth upgrade since the merge and the price is just… flat. classic