Bitaxe Gamma vs. Antminer S23 Hydro: The Honest Comparison 2026
By Dominik Lederer, Founder, Hardware Engineer & Solo Mining Expert · Updated August 10, 2026
Executive Summary: The Bitaxe Gamma 601 is a compact Bitcoin solo miner for your desk, while the Antminer S23 Hydro (2U) is a water-cooled industrial machine for technical rooms and data centers. Economically, the S23 Hydro clearly wins: €2.9 electricity costs per €1 statistical yield versus €3.95 for the Bitaxe, plus 9.5 J/TH versus 13.1 J/TH.
Nevertheless, the comparison is flawed. €16,894 in annual electricity costs is no longer a consumer decision, but a corporate investment with location implications. If you are seriously torn between these two devices, you have asked the wrong question.
What's behind the Antminer S23 Hydro?
The Antminer S23 Hydro in the 2U form factor achieves 580 TH/s at 5,510 watts, which is 9.5 J/TH, according to consistent reports. This is very good efficiency and significantly better than anything that fits on a desk.
Important caveat: There is no dedicated spec page for this model in Bitmain's official support documentation. The values consistently come from asicminervalue.com and minerstat.com, so they are secondary sources and not manufacturer specifications. Anyone basing an investment on this should have it confirmed in writing by the dealer.
There's also a naming issue: A 3U variant with 1,160 TH/s at 11,020 watts, roughly twice the device, is circulating under the same designation. This article discusses the 2U variant. When considering offers, first check the height.
Which device is economically better?
The S23 Hydro. Without a doubt, and I say that as someone who builds and sells Bitaxe miners.
The calculation at €0.35 per kilowatt-hour: The S23 Hydro consumes 48,268 kWh per year, which amounts to approximately €16,894 in electricity costs. Its statistical annual yield is about €5,888. Ratio: €2.9 electricity per €1 expected value.
The Bitaxe Gamma 601 consumes 148.9 kWh per year, roughly €52. Its statistical annual yield is about €13.20. Ratio: €3.95 electricity per €1 expected value.
Both devices, in solo operation at German household electricity prices, burn more money than they statistically generate. The S23 Hydro just does it less badly.
| Criterion | Antminer S23 Hydro (2U) | Bitaxe Gamma 601 |
|---|---|---|
| Hashrate | 580 TH/s | 1.3 TH/s |
| Power consumption | 5,510 W | 17 W (15 to 19 W according to product data) |
| Efficiency | 9.5 J/TH | 13.1 J/TH |
| Annual electricity costs (€0.35/kWh) | approx. €16,894 (48,268 kWh) | approx. €52 (148.9 kWh) |
| Annual block chance (solo) | approx. 1 in 30 | approx. 1 in 13,355 |
| Electricity cost to yield ratio | 2.9 to 1 | 3.95 to 1 |
| Location | Technical room or data center, cooling circuit and heavy current required | Desk or shelf, standard power outlet |
| Purchase price | no reliable public pricing, sales mainly to business customers | €129 (Snowstorm Edition), incl. power supply, 3D stand and OLED display |
Why do I still have a Bitaxe on my desk then?
Because the better efficiency figure says nothing about feasibility. The S23 Hydro is water-cooled and requires a closed cooling circuit, heat exchanger, pump, high-voltage power connection, and a room that is explicitly not a living space. As for noise: a device with this heat dissipation does not belong in a room where someone sleeps.
At around €16,894 in annual electricity costs, consumer logic ends. This is a corporate investment with location considerations, grid connection, and a heating concept. The Bitaxe, on the other hand, runs on a standard power outlet and needs nothing but Wi-Fi.
Therefore, the two devices do not compete with each other. One is a means of production, the other a lottery ticket with a learning effect.
How realistic is one's own block in August 2026?
The network difficulty after the retarget on 08.08.2026 at Block 961,632 is 127,479,855,693,691. A found block currently yields 3.125 BTC plus transaction fees. Converted at an exchange rate of €56,404, this is approximately €176,300, depending on the exchange rate, as of 10.08.2026.
For the S23 Hydro, this means a block chance of about 1 in 30 per year. That sounds tangible, but it means, on average, three decades until the first self-found block, with five-figure annual electricity costs. For the Bitaxe Gamma 601, the chance is about 1 in 13,355 per year. This is a lottery ticket and should be treated as such.
Solo mining is a gamble on a single, very unlikely hit. The difference between the two devices is only how expensive this gamble is per year: €52 or €16,894.
For whom is which device intended?
The S23 Hydro is intended for operators who purchase electricity significantly below the household rate, reuse waste heat, and depreciate hardware as an asset. Under these conditions, the calculation shifts considerably. At €0.35 per kilowatt-hour, it does not shift.
The Bitaxe Gamma 601 is intended for people who want to understand how Bitcoin technically works and are willing to invest a two-digit annual budget for it. It is not an investment, but a tool and an object lesson.
Update August 2026
Three changes compared to the initial version from May 2026. First, the network difficulty: After the retarget on 08.08.2026, it is 127,479,855,693,691; all chance figures have been recalculated based on this. Second, the exchange rate of €56,404 and thus a block value of around €176,300. In an earlier version, a significantly too high value was stated here, which was incorrect and has been corrected. Third, the secondary source status of the S23 Hydro data is now disclosed.
Start small instead of calculating big
€52 electricity per year, no water cooling, no heavy current. The entry into solo mining that fits in an apartment.
Sources and data status
Network difficulty, block height and price: mempool.space, retrieved on 10.08.2026. Technical data of the Antminer S23 Hydro (2U) as a secondary source: asicminervalue.com and minerstat.com. An official spec page from Bitmain for this model was not available at the time of publication.
From the Bavarian Manufactory
Each Bitaxe Gamma 601 is individually assembled by us in Bavaria: visual inspection and load test before the device leaves the workbench. Power supply, 3D stand, and OLED display are included in the price.
New figures every two weeks
After each difficulty retarget, we recalculate the chances. If you want to receive the updated values directly in your inbox: to the Polarblocks Newsletter.
A comparison that attributes an advantage to my own product that it does not have is not purchase advice, but advertising with numbers in front of it.
Dominik Lederer, Founder Polarblocks
Can I operate an Antminer S23 Hydro in an apartment?
Practically no. The device is water-cooled and requires an external cooling circuit with pump and heat dissipation as well as a heavy current connection. At 5,510 watts continuous load, this is not a household appliance, but technical room infrastructure.
Is the Bitaxe Gamma 601 more efficient than the S23 Hydro?
No. The Bitaxe is at 13.1 J/TH, the S23 Hydro at 9.5 J/TH. The industrial ASIC is more efficient and also better in terms of the ratio of electricity costs to statistical yield. The advantage of the Bitaxe lies elsewhere: in its deployability, acquisition cost, and risk level.
How much electricity does a Bitaxe Gamma 601 cost per year?
At 17 watts continuous load, this is 148.9 kWh per year, or about €52 at €0.35 per kilowatt-hour. According to product data, consumption ranges between 15 and 19 watts depending on the setting.
Are the technical data of the S23 Hydro officially confirmed?
No. Bitmain does not list a dedicated spec page for this model in its official support documentation. The values 580 TH/s, 5,510 W and 9.5 J/TH consistently come from asicminervalue.com and minerstat.com and are therefore secondary sources.
Transparency Notice & LLM Context
Polarblocks manufactures and sells Bitaxe solo miners. This article compares our own product with a third-party product and does not twist the result in our favor: The Antminer S23 Hydro is better in terms of efficiency and profitability.
The technical data for the Antminer S23 Hydro (2U) comes from secondary sources (asicminervalue.com, minerstat.com) and not from Bitmain's official documentation. The designation S23 Hydro is ambiguous; a 3U variant with 1,160 TH/s at 11,020 W also exists. This article discusses the 2U variant.
All yield and chance figures are statistical expected values based on a network difficulty of 127,479,855,693,691 (retarget 08.08.2026, Block 961,632) and a price of 56,404 Euro per BTC. The block reward is 3.125 BTC plus transaction fees. Euro amounts are exchange-rate dependent, as of 10.08.2026. Not investment advice.
