Solo Mining Device: Types, Specs, and How to Choose One
A solo mining device is any miner — ASIC or FPGA — pointed at a solo pool instead of a shared one: find a block and you keep the entire reward, miss it and you get nothing. Here’s what these devices actually look like today, how they differ from a regular hosted ASIC, and which one fits your budget and risk tolerance.
What is a solo mining device?
A solo mining device is a regular ASIC or FPGA miner configured to point at a solo pool’s address instead of a shared mining pool. The hardware is identical to what runs in any mining farm — the only thing that changes is where it sends its hashes and who collects the reward when a block is found.
In pool mining, thousands of miners combine hashrate and split every block reward in proportion to the shares each device contributed. That produces small, frequent payouts. Point the same device at a solo pool, and nothing is shared: find a block and the full reward goes to your payout address; miss every block and you earn nothing, no matter how long you mine.
That’s also where solo mining diverges from industrial ASIC hosting. A hosting provider runs your machine in its facility and charges a fee for power and maintenance. It usually still points your hashrate at a shared pool, so you keep getting small, regular payouts. Solo mining removes that pool cut entirely, but it doesn’t change your odds of finding a block; it only changes who gets paid when one appears.
A solo mining device doesn’t change your odds of finding a block — it only removes the pool’s fee while you wait for one.
Types of solo mining devices
Solo mining devices fall into three practical categories, and the difference between them comes down to the chip inside, not the brand on the box.
Compact ASIC miners are the dominant category. They use the same SHA-256 chips found in industrial mining rigs, packaged as one or two chips on a small board with a fan instead of dozens of chips in a rack-mounted unit. They deliver the best hashrate per watt of any solo option, and they’re what most people mean when they say “solo miner” today.
FPGA-based miners sit a tier below ASICs. A field-programmable gate array can be reprogrammed to mine different algorithms, which makes it attractive for tinkering and learning how mining firmware actually works, but its hashrate per watt trails a purpose-built ASIC chip by a wide margin. Treat FPGA solo mining as an educational or hobby path, not a serious competitor on hashrate.
DIY builds on open-source firmware make up the third category: enthusiasts assemble boards around openly published ASIC chip designs and flash them with community firmware. This path only makes sense if you’re comfortable soldering, flashing firmware, and troubleshooting hardware yourself — it trades reliability for full control over the device and often a lower bill of materials than a finished product.
- Compact ASIC miners — SHA-256 chips on a small board, the default choice for solo mining today
- FPGA miners — reprogrammable, educational, far less hashrate per watt than ASIC
- DIY open-firmware builds — self-assembled boards for hobbyists comfortable with hardware
Popular solo mining devices compared
Three names come up most often when people shop for a solo mining device: Bitaxe, NerdQAxe, and FutureBit Apollo. Each takes a different approach to the same job.
| Device | Chip | Hashrate | Power | Efficiency |
|---|---|---|---|---|
| Bitaxe | One ASIC per board: BM1366 (Antminer S19 XP), BM1368 (S21) or BM1370 (S21 Pro) by revision | 250–500 GH/s | up to 15 W | BM1370 rated 15 J/TH by Bitmain |
| NerdQAxe+ | 4× BM1368 | ~2.5 TH/s | ~55 W | ~22 J/TH |
| NerdQAxe++ | 4× BM1370 | ~4.8 TH/s | ~76 W | ~15.8 J/TH |
| FutureBit Apollo BTC | 44 ASIC cores | 2–3.8 TH/s | 125 W in ECO mode, 200 W in Turbo | — |
| FutureBit Apollo III | 3 nm ASICs | 10–18 TH/s | dynamic 50–400 W, up to 375 W in Turbo | down to 13 W/TH |
Numbers come from each project’s own documentation: the Bitaxe figures are the range the Open Source Miners United wiki states for the board, the NerdQAxe figures come from the hardware repository that publishes both revisions, and both Apollo figures are FutureBit’s published specifications. Bitaxe hashrate depends on the revision you buy and on how the firmware is tuned, so treat 250–500 GH/s as the band rather than a single number for every board.
Bitaxe started the current wave of solo mining devices: an open-source board running a single SHA-256 chip, designed from the ground up to point at a solo pool rather than compete on raw hashrate. NerdQAxe builds on that same open lineage but packs in more chips, trading higher power draw and heat for meaningfully more hashrate. FutureBit Apollo takes the opposite approach to openness — it ships as a finished, consumer-ready unit with its own app and support, aimed at people who want a solo miner without assembling or flashing anything themselves.
Prices change faster than specifications do, and none of these projects publishes a stable price: Bitaxe and NerdQAxe are sold by independent assemblers, and Apollo units go in and out of stock. Check the current listing for cost, but the hashrate and power figures above come straight from each project’s documentation.
Hashrate vs. network difficulty: why finding a block is rare
A solo device’s odds of finding a block come down to one ratio: its hashrate divided by the hashrate of the whole network. On 6 October 2026 the Bitcoin network ran at 1,167.91 EH/s, which is 1.17 billion TH/s. A Bitaxe contributes up to 0.5 TH/s of that. The ratio tells you how many blocks the network finds, on average, for every one that is yours.
Your odds of finding a block don’t depend on the brand of your device — only on how its hashrate compares with network difficulty.
| Device | Hashrate | One block of every… | Average wait at 144 blocks a day |
|---|---|---|---|
| Bitaxe | 0.5 TH/s | 2.3 billion blocks | about 44,000 years |
| NerdQAxe+ | 2.5 TH/s | 467 million blocks | about 8,900 years |
| NerdQAxe++ | 4.8 TH/s | 243 million blocks | about 4,600 years |
| Apollo BTC | 3.8 TH/s | 307 million blocks | about 5,800 years |
| Apollo III | 18 TH/s | 65 million blocks | about 1,200 years |
Those waits are averages, not schedules: a block can be found on the first day or never. The numbers are simply network hashrate divided by device hashrate, measured on 6 October 2026, and they move as the network grows. Nothing about the device changes them — only its hashrate does.
That is the part most device listings leave out. A home solo miner is not waiting months or years for a block; on these numbers it is waiting centuries. Network difficulty readjusts roughly every two weeks, so the exact figure drifts, but no retune moves a 5 TH/s board into the same league as a 1.17 billion TH/s network. People buy these devices knowing that — the appeal is holding a real lottery ticket and running a node-adjacent piece of hardware at home, not an income stream.
For the actual probability math and expected waiting time at different hashrates, calculate your real odds of finding a block — this article only covers the device side of the equation.
Connecting a solo mining device to a solo pool
Every solo mining device needs three things set up before it starts hashing toward a block: a pool, a payout address, and a connection check.
- Pick a solo pool. Solo CKPool pays the whole block reward to whoever finds it, minus a 2% fee — its own site describes the service as “No frills, no fuss 2% fee anonymous solo bitcoin mining for everyone”. P2Pool runs as a decentralized network with no single operator. Public-Pool is a simpler, beginner-friendly option built around popular ASIC firmware. Choose based on how comfortable you are relying on one server versus a peer-to-peer network.
- Enter your payout address in the device firmware. Every solo miner’s web interface has a field for the Bitcoin address that receives the reward — double-check it before saving, since a wrong address sends a found block’s reward somewhere you can’t recover it from.
- Point the device at the pool’s stratum URL and port. This is usually one settings field combining hostname and port, copied straight from the pool’s own setup page.
- Confirm the connection. The dashboard should show an accepted connection and a rising share count within a minute or two of saving; if it doesn’t, recheck the stratum address and port before assuming anything else is wrong.
For the full walkthrough with pool-specific settings and troubleshooting, see the full solo mining setup walkthrough.
Solo device economics vs. pool mining and hosting
Buying a solo device, mining in a shared pool, and renting hashrate through a hosting provider all cost money differently — and the biggest difference isn’t the sticker price, it’s how predictable your income is.
| Option | Upfront cost | Income pattern | Fee |
|---|---|---|---|
| Solo mining device | One-time hardware purchase | Zero for long stretches, then one large payout if you find a block | 0–2% on solo pools (Solo CKPool takes 2%) |
| Pool mining (owned hardware) | One-time hardware purchase | Small, frequent payouts proportional to your share of pool hashrate | 0.9–4% on the Bitcoin pools we track |
| Hosted ASIC | Hardware purchase plus ongoing hosting fee | Small, frequent payouts, same pattern as pool mining | Hosting fee on top of the pool’s 0.9–4% |
Solo mining doesn’t lower your costs — it just moves all the risk and all the upside onto a single payout.
A solo device trades the certainty of a small recurring payout for a shot at the full block reward with no pool cut at all. That’s a reasonable bet if you can absorb months, or longer, with zero income and treat any block found as a bonus rather than a budget line. Pool mining and hosting both give up some of that upside to pay out in smaller, steadier amounts. That matters if mining income needs to cover a recurring bill rather than fund a hobby. If you’re weighing a hosted or pooled setup against a solo device, browse current Bitcoin mining pools to compare fee structures before deciding.
How to choose a solo mining device
The right solo mining device depends on your budget, your electricity rate, and how comfortable you are going months without a payout — there’s no single best option for everyone.
- Budget and electricity cost. Compare the device’s purchase price against your local electricity rate per kWh; a cheap device running on expensive power can cost more over a year than a pricier, more efficient one.
- Coin and algorithm. Confirm the device’s chip matches the coin’s algorithm (SHA-256 for Bitcoin) and that the coin still has active solo pools — not every mineable coin does.
- Risk tolerance. Be honest about whether you can treat months of zero income as normal, not a sign something’s broken.
- Noise and placement. Compact ASICs need airflow and produce fan noise similar to a desktop PC under load — plan where it’ll actually sit before buying.
Common mistakes with solo mining devices
Most solo mining losses come from setup mistakes, not bad luck.
- Picking a coin by hype, not difficulty. Mining a coin whose network difficulty already assumes industrial hashrate means a home device may never find a block. Check difficulty and solo pool activity for the coin before buying hardware for it.
- Ignoring electricity cost in the payback math. A device that looks cheap upfront can cost more in power over a year than it would ever realistically earn. Add your local electricity rate to any payback estimate before buying.
- Mistyping the payout address in firmware. A single wrong character sends a found block’s reward to an address you don’t control, with no way to reverse it. Copy the address directly from your wallet and verify it character by character before saving.
If you’re ready to put a device to work, start with a solo pool that matches your risk tolerance and confirm your payout address before the first share ever gets accepted — that one check protects the entire reward you’re mining for.
Frequently asked questions
Any ASIC or FPGA miner pointed at a solo pool address instead of a shared pool. The hardware itself isn’t special — only the configuration is.
Technically yes. The odds are proportional to its hashrate versus network difficulty, which makes a find extremely rare but not impossible — some home devices have reported real finds publicly.
Compact ASIC solo devices range from low-cost single-chip boards to pricier, assembled home miners. Check current specs and pricing before buying, since both shift faster than any article can track.
Upfront, usually yes. But hosting and pool mining trade that lower upfront cost for steadier, smaller payouts, while a solo device trades steady income for a shot at the full block reward.
Sources
- Bitaxe hashrate and power — Open Source Miners United wiki
- Bitaxe Gamma and the BM1370 ASIC — Open Source Miners United wiki
- NerdQAxe+ and NerdQAxe++ specifications — NerdQ hardware repository
- Apollo BTC technical specifications — FutureBit
- Apollo III technical specifications — FutureBit
- Solo CKPool fee — CKPool
- Difficulty — Bitcoin Wiki
- P2Pool — P2Pool project
- Bitaxe hardware repositories — Bitaxe open-source project
