ROI ASIC

ROI ASIC · measurement signals · bounded economics

Reported performance, with context attached

A metric-first view of independent field reports. Numbers stay tied to the machine and source; derived efficiency is labelled; incomplete measurement panels stay incomplete.

Published 28 August 2026

6source-linked reports
2022-2026years of field history
3S19 · S19j Pro · T21

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Six signals for an evidence-led pilot

Recent field signal
Featured community result

Antminer S19 95T

Solar S19 profile at 1,100 W and 15.9 J/TH

A solar operator reported an S19 95T at 1,100 W and 15.9 J/TH, while praising the interface, autotuner and per-chip tuning.

Source-reported1,100 W · 15.9 J/TH
Derived from reported valuesimplied ≈69.2 TH/s

The captured post does not state whether the figures came from wall measurement, the controller, or an average over a stated time window. Treat 15.9 J/TH as an unverified source report.

Measurement reading: reconcile wall power, pool-accepted work and duration before using the values in economics.

SolarEfficiencyTuning
RedditPublic independent-user contributionOpen original source ↗
Recent field signal
Featured community result

Loki-modded Antminer S19j Pro

Two low-power points on a Loki-modded S19j Pro

The operator reported about 45 TH/s at 1,200 W and 28 TH/s at 900 W on a Loki-modded, two-board S19j Pro using a 120 V APW3 supply.

Source-reported45 TH/s / 1,200 W · 28 TH/s / 900 W
Derived from reported values≈26.7 J/TH · ≈32.1 J/TH

Measurement reading: reconcile wall power, pool-accepted work and duration before using the values in economics.

EfficiencyPower control
RedditPublic independent-user contributionOpen original source ↗
Historical field signal
Featured community result

Antminer S19j Pro 104T · oil-immersion fleet

Immersion fleet: two S19j Pro 104T operating points

An operator working with an oil-immersion S19j Pro 104T fleet reported about 128 TH/s at a 4,300 W VNISH setting and around 124 TH/s at roughly 3,800 W, noting the efficiency trade-off.

Source-reported128 TH/s / 4,300 W · 124 TH/s / 3,800 W
Derived from reported values≈33.6 J/TH · ≈30.6 J/TH

Measurement reading: operating context matters as much as the number; separate hardware changes from firmware effects.

TuningPower controlEfficiency
RedditPublic independent-user contributionOpen original source ↗
Recent field signal
Featured community result

Antminer T21

A T21 set to a 175 TH/s target

A forum operator reported a first T21 running VNISH at a 175 TH/s target in a single-phase conversion using backup S19j Pro power supplies.

Source-reportedT21 · target 175 TH/s · single phase

Measurement reading: operating context matters as much as the number; separate hardware changes from firmware effects.

TuningPower controlStability
BitcointalkPublic independent-user contributionOpen original source ↗
Recent field signal
Featured community result

Antminer, model not stated

Granular power control and a modern interface

An operator highlighted fine power control and the interface, and reported continued operation during a fan-speed reporting fault while temperature remained the key protection signal.

Source-reportedPower control · interface · sensor context

Measurement reading: this is a qualitative operating signal, so do not convert it into ROI without a complete panel.

Power controlTuningStability
RedditPublic independent-user contributionOpen original source ↗
Historical field signal
Featured community result

Antminer S19 family

Undervolting used to contain heat

In an S19 undervolting discussion, an operator described using VNISH for a strong underclock specifically to limit heat.

Source-reportedThermal objective · underclock

Measurement reading: this is a qualitative operating signal, so do not convert it into ROI without a complete panel.

Efficiency
RedditPublic independent-user contributionOpen original source ↗

Source policy

A field number is the beginning of the model

Before a result enters fleet economics, reconcile wall power, pool-accepted work, duration, cooling and failure rate. The posts below are valuable discovery signals, not substitutes for a controlled pilot.

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How this collection is built

How this collection is built

We include product-specific positive field reports with a dated public original and a direct source link. Distributor, reseller, hosting-provider, affiliate and sales-led contributions are excluded. The platform, date and permalink remain visible. Account handles are withheld unless the author gives explicit permission.

Hardware condition, board, power supply, cooling, ambient temperature, pool measurement and observation window can change the result. Treat every number as a lead for a controlled canary, not a promise.

The five gold stars are a visual collection marker, not a numeric rating assigned by the author.

Machine-readable evidence · JSONSchema.org · JSON-LD