{"id":556073,"date":"2026-08-19T08:00:12","date_gmt":"2026-08-19T07:00:12","guid":{"rendered":"https:\/\/cryptoslate.com\/?p=556073"},"modified":"2026-08-18T19:00:48","modified_gmt":"2026-08-18T18:00:48","slug":"ethereums-12-gpu-proving-problem-just-got-a-4-gpu-answer","status":"publish","type":"post","link":"https:\/\/cryptoslate.com\/ethereums-12-gpu-proving-problem-just-got-a-4-gpu-answer\/","title":{"rendered":"Ethereum\u2019s 12-GPU proving problem just got a 4-GPU answer"},"content":{"rendered":"

ZisK's new four-GPU benchmark claim has lowered the headline hardware count in Ethereum's real-time proving race. In February, CryptoSlate<\/em> examined a roughly 12-GPU setup as a possible centralization risk. The new figure could bring proof generation closer to independent operators, provided the workload and operating conditions are comparable.<\/p>\n

ZisK is an open-source zero-knowledge virtual machine project, and\u00a0on Aug. 18 it said\u00a0its v1.1.0-alpha prover recorded a 9.62-second p99 on four RTX 5090 GPUs. A follow-up said 99.7% of tested Ethereum blocks finished in less than 10 seconds.<\/p>\n

Jordi Baylina<\/a> amplified the result as a milestone combining four-GPU proving<\/a> with claimed 128-bit security and post-quantum resistance.<\/p>\n\n

\n \n
\n Related Reading<\/span>\n

Ethereum\u2019s massive fee shock: New post-quantum signatures are 40x larger, threatening to crush network throughput and user costs<\/h3>\n <\/div>\n \n <\/i>\n <\/span>\n <\/a>\n<\/div>\n\n

Ethereum's working standard<\/a> calls for at least 99% of mainnet blocks to be proved within 10 seconds. If ZisK's p99 was calculated over an equivalent mainnet-block workload and timing boundary, 9.62 seconds would sit 0.38 seconds below that threshold.<\/p>\n

ZisK has yet to publish<\/a> the block range, sample size, p99 calculation, timing boundary, proof size, or measured whole-system power for the four-GPU run<\/a>. That announcement is, as of now, a benchmark claim.<\/p>\n

The six-part test<\/h2>\n

The Ethereum Foundation<\/a> paired its latency target with five other conditions intended to preserve decentralization: on-premises equipment costing no more than $100,000, power use no higher than 10 kilowatts, fully open-source code, at least 128-bit security and proofs no larger than 300 KiB without trusted setups.<\/p>\n

CryptoSlate has also tracked the Foundation's emphasis on the 128-bit security threshold<\/a>.<\/p>\n\n

\n \n
\n Related Reading<\/span>\n

Ethereum Foundation refocuses to security over speed – sets strict 128-bit rule for 2026<\/h3>\n <\/div>\n \n <\/i>\n <\/span>\n <\/a>\n<\/div>\n\n

ZisK's repository<\/a> is licensed under MIT or Apache 2.0, and the project claims 128-bit security for the new result. The latency condition remains provisional because the announcement lacks the workload and measurement details needed for an equivalent test.<\/p>\n

The hardware arithmetic looks promising while leaving household practicality unresolved. Nvidia<\/a>\u00a0specifies 575 watts of total graphics power<\/a> for a reference RTX 5090. Four cards carry a combined GPU-only rating of 2.3 kW, below the 10 kW ceiling before CPUs, memory, storage, conversion losses and cooling enter the calculation.<\/p>\n

Nvidia launched the RTX 5090 at $1,999<\/a>, putting four cards at $7,996 at launch MSRP. That figure leaves substantial room below $100,000 for the rest of a multi-GPU machine.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Criterion<\/th>\nEthereum target<\/th>\nZisK v1.1.0-alpha public evidence<\/th>\nOpenVM 2.0 public evidence<\/th>\n<\/tr>\n<\/thead>\n
Latency<\/td>\np99 at or below 10 seconds for mainnet blocks<\/td>\nClaimed 9.62-second p99 on four 5090 GPUs; workload details undisclosed<\/td>\n9.8-second p99 on eight 5090 GPUs<\/td>\n<\/tr>\n
Capital cost<\/td>\n$100,000 or less on premises<\/td>\n$7,996 for four cards at launch MSRP; full system undisclosed<\/td>\nNot reported in the cited release<\/td>\n<\/tr>\n
Power<\/td>\n10 kW or less on premises<\/td>\n2.3 kW GPU-only rating; measured system draw undisclosed<\/td>\nNot reported in the cited release<\/td>\n<\/tr>\n
Code<\/td>\nFully open source<\/td>\nPublic MIT\/Apache repository<\/td>\nNot assessed in this comparison<\/td>\n<\/tr>\n
Security<\/td>\nAt least 128 bits<\/td>\nProject claims 128-bit provable security<\/td>\n100-bit provable security<\/td>\n<\/tr>\n
Proof<\/td>\n300 KiB or less, no trusted setups<\/td>\nUndisclosed for the four-GPU result<\/td>\nUnder 300 kB; setup condition unstated in the cited release<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A rig can fit beneath a nominal budget and still strain a smaller operator's power delivery, cooling, or host-hardware capacity. Fast proof generation also has to satisfy Ethereum's<\/a> proof-size and setup rules.<\/p>\n

\"Comparison<\/a>
ZisK\u2019s four-GPU Ethereum proving claim remains provisional, with 9.62-second latency reported while full-system power and cost remain unresolved.<\/figcaption><\/figure>\n

OpenVM shows why benchmark boundaries matter<\/h2>\n

OpenVM's July production release reported<\/a> a 9.8-second p99 on eight 5090 GPUs across 7,200 Ethereum mainnet blocks beginning at block 24,000,000. The run used 100-bit provable security and produced proofs under 300 kB.<\/p>\n

ZisK's four-GPU number may represent a genuine efficiency gain, while the missing equivalent inputs prevent a reliable ranking. The security levels differ, ZisK has not attached a proof size to its result, and its tested block population and timing boundary remain unpublished.<\/p>\n

The Ethproofs API<\/a> defines proving time as including witness generation while excluding data fetching and proof-submission latency. A p99 calculated around a different interval can look similar while measuring a different operational burden.<\/p>\n

Ethproofs currently lists ZisK versions through v0.18.0<\/a> and exposes a 16-GPU RTX 5090 ZisK configuration<\/a>. It has yet to show an independent four-GPU v1.1.0-alpha p99 result, leaving the announcement without a public reproducibility baseline.<\/p>\n

ZisK's release history<\/a> identifies v1.1.0-alpha, while its repository describes the current line as a foundation for a production release undergoing security and correctness audits.<\/p>\n

An OpenZeppelin review<\/a> published in November 2025 examined a limited set of ZisK binary and main constraints at a historical commit. It reported 13 findings, including one critical and two high-severity issues, with none marked resolved in that report.<\/p>\n

CryptoSlate's February analysis<\/a> framed a roughly 12-GPU, seven-second setup as a new centralization risk. ZisK now places a claimed four-GPU run beside that earlier concern, though the configurations have not been shown to be equivalent.<\/p>\n\n

\n \n
\n Related Reading<\/span>\n

Ethereum wants home validators to verify proofs but a 12 GPU reality raises a new threat<\/h3>\n <\/div>\n \n <\/i>\n <\/span>\n <\/a>\n<\/div>\n\n

A disclosed mainnet block set, full timing definition, sub-300-KiB proofs without a trusted setup, measured wall power, and an independently runnable release would turn the result into evidence for a home-proving breakthrough.<\/p>\n

For now, the claim has weakened the simple data-center-scale objection while leaving the operational case open.<\/p>\n","protected":false},"excerpt":{"rendered":"

Its claimed 9.62-second p99 fits Ethereum’s latency target, while workload, proof and whole-system power details remain undisclosed.<\/p>\n","protected":false},"author":1264,"featured_media":556106,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77968,79325,77923,37],"tags":[72190,77645,78928,78017,77925,75195],"prediction_market_topic":[],"post_folder":[],"acf":[],"yoast_head":"\nEthereum\u2019s 12-GPU proving problem just got a 4-GPU answer<\/title>\n<meta name=\"description\" content=\"ZisK claimed 9.62-second p99 fits Ethereum's latency target, while workload, proof and whole-system power details remain undisclosed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cryptoslate.com\/ethereums-12-gpu-proving-problem-just-got-a-4-gpu-answer\/\" \/>\n<meta property=\"og:locale\" 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