Pencil drawing of the Bitdeer SEALMINER A2 Hydro

Industrial Industrial (hydro) Rack / shelf Unknown

Bitdeer SEALMINER A2 Hydro

The water-cooled A2, a flat rack unit for hydro farms, launched in October 2024. Bitdeer rates it at 446 TH/s and about 7,360 W (16.5 J/TH) on a 380–480 V three-phase supply. Shipped from spring 2025; now sold out at Bitdeer.

Best price $7,495

$16.80 per TH · New · Pre-order at Apexto

Reviews from Nostr ↓

Hashrate446 TH/s worst 250 GH/sbest 1.16 PH/s 41st best of 197 (the bar uses a log scale)
Power (stock)7,359 W lowest 11 Whighest 22 kW 28th highest of 199 (the bar uses a log scale)
Efficiency16.5 J/TH worst 100 J/THbest 8.9 J/TH 75th best of 195
Earns per kWh$0.092 worst $0.010best $0.171 75th best of 195
Heat output25,110 BTU/h worst 38 BTU/hbest 75,067 BTU/h 28th best of 199 (the bar uses a log scale)
Noise—
Price per TH$16.80 worst $539.96best $1.82 84th best of 156 (the bar uses a log scale)

Where to buy

Store Trustpilot Condition Availability Listed price In your currency Per TH Checked Link
Apexto Available on backorder. Price from Apexto category listing (shown with $). Apexto lists warehouses in Hong Kong and the US. TrustScore 4.5 out of 5, 167 reviews New Pre-order $7,495 $7,495 $16.80 4 Nov 2026 Visit
Bitdeer Official Store Maker's own shop Store notes Sold out. Bitdeer says prices exclude shipping, customs duties and other taxes. TrustScore 2.0 out of 5, 17 reviews New Out of stock $6,690 excl. tax $6,690 $15.00 4 Nov 2026 Visit

Prices as listed on each store's page on the date shown, without shipping. Prices marked excl. tax leave out VAT or sales tax, and others may too. Per TH uses the hashrate of the unit each store sells. Converted at ECB rates of 11 Nov 2026. Trustpilot scores are for the store, not the device. Each store's name opens its page, with everything it sells and its reviews.

Heat, running cost and sats

Heat per day
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Electricity per day
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Mining earns per day*
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Net cost per day
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Net cost per kWh of heat
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Solo: chance of a block per year
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Earns per kWh, on 3-month averages
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Payback
—

*What a pool would pay on average at today's difficulty, block reward and bitcoin price, before pool fees. Solo miners usually earn nothing, and very rarely a whole block. A plain electric heater turns the same electricity into the same heat, so the mining income is what makes the difference.

Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the hours you set. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out.

Specifications

BrandBitdeer
ModelSEALMINER A2 Hydro
SKU—
TypeIndustrial (hydro) · Industrial
Form factorRack / shelf
CoolingWater (hydro)
Production statusUnknown *
Launch dateOct 2024
Hashrate446 TH/s
Power consumption (stock)7,359 W
Mining efficiency16.5 J/TH
ASIC chipBitdeer SEAL02 (named by the device's maker)
Heat output25,110 BTU/h
Input voltage380–480 V AC, 3-phase
Frequency50/60 Hz
Net dimensions (W × D × H)482 × 665 × 86 mm (19 × 26.2 × 3.4 in)
Net weight20.5 kg (45.2 lb)
Noise—
Operating temperature—
Area heatedAbout 49–147 m² (our estimate)
Colours—
Company based inSingapore
Made in—

* Not confirmed by the maker's own documents yet.

Features

  • Hydro (water) cooled
  • 380–480 V three-phase input
  • Bitdeer SEAL02-generation chip (per Bitdeer roadmap)
  • RJ45 Ethernet

Reviews

Reviews are posted on Nostr, so they belong to the people who wrote them, not to us. Sign in with a Nostr extension or signer app to add yours.

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Sources and data notes

Not yet confirmed from the maker's own documents: production status; noise; where it's made; colours.

Spotted a mistake? Let us know.