ePIC
Antminer S19, S19j Pro, S21, S21 Pro
ModeSidecar tuner · no reflashing
v0.9 · out of beta for S19 / S21 series
ASIC Refinery.
Chip-level auto-tuning overlay for ASIC fleets — no flash, no dev fee.
Refinery sits on top of ePIC, Bixbit, Braiins OS+, LuxOS and stock Whatsminer firmware to squeeze extra efficiency out of Antminer and MicroBT rigs. Pick a goal — J/TH or $/day — and a continuous target-seeking tuner rewrites per-chip voltage and power limits in lockstep with BTC price and your power rate.
Deployed on farms7,400minersMedian improvement+6.4%
Live tuner· farm-east / rack 04
target 24.04 J/THA-01
647 mV
A-02
615 mV
A-03
680 mV
A-04
622 mV
A-05
648 mV
A-06
608 mV
Median hashrate
118.9 TH/s
vs. stock
+3.5%
Tune interval
60 s
Illustrative panel · every value on a real rig is read directly from firmware telemetry.
Why Refinery
Auto-tuning without the trade-offs you’ve been told to accept.
Custom firmware unlocks headroom — and locks you in. Pool-side tuning scripts centralize control — and lose the chip. Refinery keeps your stack, takes the heavy lifting off your ops team, and pays for itself in power savings.
Per-chip tuning
The weakest cell no longer caps the strongest one.
Most tuners move one global frequency slider. Refinery walks a vector of voltage and power limits around the Si chip itself — across every hash board, every bank — so the worst cell no longer cap the best one. The result is a flatter, tighter efficiency distribution and a higher usable hashrate from the same hardware.
Up to
+9.1%
efficiency
Per
1 chip
granularity
No
dev fee
no skim
Runs on
5 brands
of firmware
Continuous seeker
No step profiles. No tables.
Pick a goal — J/TH efficiency, $/day after power, or hash per kWh. The tuner sweeps toward it in real time and re-plans the operating point on every cycle as the world changes around your fleet.
Non-invasive
Outbound-only tunnel. Nothing flashed.
A lightweight on-prem agent opens an outbound-only WireGuard tunnel to the cloud control plane. No inbound firewall changes, no firmware replacement, no manufacturer warranty voided.
How it works
Four steps. Nothing is written until step three knows it’s safe.
- 01
Pull a topology snapshot
The on-prem agent reads the firmware’s existing telemetry: per-chip V/F tables, temperatures, reported hashrate, pool luck. Nothing is written yet.
- 02
Choose a target
J/TH target, $/day floor, or a fixed hashrate with minimum efficiency. The tuner takes its direction and a safe operating envelope from your fleet policy.
- 03
Sweep toward the optimum
A continuous, bounded search — small V/P nudges, watched for reject rates, temps, and power draw. The tuner backtracks the moment a chip goes unstable.
- 04
Lock it in
Settled values are written back per-chip with a versioned history. Roll back a single chip, a board, or a whole rig with one click.
Every step is gated by a watchdog: pool rejects, intake temp, or power draw outside your fleet policy pauses the sweep and rolls back to the last accepted operating point.
Compatible firmware
Already on one of these? You’re minutes away from running Refinery.
Refinery talks to your firmware’s existing control plane — no reflashing, no migration. The agent speaks the manufacturer’s native API for each of the five stacks below, and falls back to read-only when a vendor API is incomplete.
Bixbit
Antminer S19XP / S21
ModeNative overlay via control API
Braiins OS+
Antminer S17 / S19 / S21 families
ModeAutotuning extension
LuxOS
Antminer S19 / S21
ModeChip-level target seeker
Whatsminer (stock)
M30S, M50, M53, M60 series
ModeRead/write via MicroBT API
Not seeing your firmware?
Refinery’s adapter layer is open — if your control plane can read V/F tables, we can drive it.
Pricing
One flat number. No dev fee. No hashrate skim.
Subscriptions are sized per miner, not per kilowatt, not per band of revenue. Invoice in BTC, USDC, or USD — the dashboard exposes all three with no minimums.
$0.99
per miner, per month
First 5 miners free · 90 days
BTC, USDC, or USD invoices
0% hashrate fee • 0% pool redirect
Cancellation monthly, no lock-in
Owner/Operator RBAC included
Get an invoicePay in BTC · USDC · USD
What that buys you
A representative 500-miner S19j Pro spread running on $0.045/kWh power at today’s pool economics. Numbers recalc on your dashboard from your actual fleet, your actual rate.
- Subscription$495.00
- Power saved (est.)−$2,140.00
- Net monthly+$1,645.00
FAQ
The questions a farm ops manager asks on day one.
No. Refinery is an overlay — it talks to your existing firmware (ePIC, Bixbit, Braiins OS+, LuxOS, or stock Whatsminer) over the API it already exposes. Your machines stay on the firmware you chose.
Talk to us
One miner or ten thousand. Same on-prem install.
Tell us your fleet size and which firmware you’re on. We’ll scope a pilot, share the agent binary, and put you in front of a working tuning panel within a day.
asic-refinery@polsia.app
Replies from a human, usually within one business day.