$/kWh
Ethereum Classic became the primary EtHash mining destination after Ethereum migrated to proof-of-stake in September 2022. ETC has continued to operate with steady network hashrate since the merge and remains the largest EtHash-compatible blockchain by market cap. The category covers 42 current models from Bitmain (Antminer E9, E11), iPollo (V1, V1 Mini), and Innosilicon (A11 Pro). EtHash hardware is not single-coin equipment. The same ASIC can mine ETC, ETHW (EthereumPoW), QKC (QuarkChain), and CLO (Callisto) by switching mining pools. This multi-coin flexibility protects buyers if any single chain loses profitability, because hardware can be redirected to whichever EtHash network offers the best return at any given time. ETC mining suits operators looking to diversify beyond Bitcoin and Scrypt without committing to brand new and untested algorithms. The ecosystem is mature, the hardware is well documented, and difficulty has been stable enough for accurate ROI projections. Every miner ships DDP and qualifies for hosting at MillionMiner's US facilities.
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Ethereum Classic (ETC) is the original, unaltered Ethereum blockchain — the chain that continued after Ethereum's controversial 2016 hard fork. Where Ethereum abandoned proof-of-work for proof-of-stake in 2022, Ethereum Classic stayed true to its founding principle: code is law, and the blockchain is immutable. Today ETC is one of the most established ASIC-mineable proof-of-work chains, secured by the Etchash algorithm and home to a global network of dedicated ASIC miners.
Network Hashrate
214.6 TH/s
Block Reward
1.9866 ETC
Algorithm
Etchash
Block Time
~13 sec
ETH and ETC share the same genesis block. Both chains begin as one.
A $60M hack of The DAO smart contract triggers a controversial hard fork. ETC continues the original unaltered chain.
Ethereum Classic listed on major exchanges, gaining global trading volume and recognition as a legitimate PoW chain.
Modified Exponential Subjective Scoring (MESS) implemented to defend against 51% attacks that had targeted ETC.
Ethereum merges to proof-of-stake. Massive wave of ex-ETH GPU miners migrate to ETC, creating a catalyst for ASIC development.
Dedicated Etchash ASICs (Antminer E9, E9 Pro, iPollo) arrive. ETC becomes a fully ASIC-dominated network.
In 2016, Ethereum's blockchain was exploited via a vulnerability in the DAO smart contract, resulting in the theft of approximately 3.6 million ETH. The Ethereum Foundation responded by executing a hard fork — rewriting the blockchain's history to reverse the hack and return funds. A significant portion of the community refused this intervention on philosophical grounds: if blockchains can be altered when it is politically convenient, the immutability promise is meaningless.
Those miners and nodes that refused the fork continued running the original, unmodified chain. That chain became Ethereum Classic. Its founding principle — "code is law" — means that no transaction, no matter how controversial, can ever be reversed. What is written to the ETC blockchain stays there permanently.
When Ethereum abandoned proof-of-work in September 2022, Ethereum Classic became the undisputed home of Ethash-compatible PoW mining — and the development of dedicated Etchash ASICs followed rapidly. Today ETC is one of the most stable and battle-tested ASIC mining opportunities available.
Etchash is a direct descendant of Ethash — the algorithm that originally powered both Ethereum and Ethereum Classic. Understanding the difference is key to understanding why ETC ASICs exist.
Ethash was designed to be ASIC-resistant by requiring a large, rapidly-growing memory dataset called the DAG (Directed Acyclic Graph). The DAG grew by roughly 8MB every 30,000 blocks (the "epoch"), eventually exceeding the memory capacity of early mining hardware. This design kept GPUs competitive and discouraged custom silicon investment for years.
Ethereum Classic introduced Etchash (EIP-1099) in November 2020 to slow the DAG growth rate — doubling the epoch length from 30,000 to 60,000 blocks. This made it viable to design dedicated ASIC hardware with a fixed, manageable memory footprint. The result: after Ethereum's merge to PoS, manufacturers like Bitmain and iPollo were ready with purpose-built Etchash ASICs within months.
The Etchash ASIC market is now mature but still less saturated than Bitcoin's SHA-256 market. Machines like the Bitmain Antminer E9 Pro and iPollo V1 Mini SE Plus deliver high MH/s output at excellent J/MH efficiency ratios. GPU mining ETC is no longer economically competitive — ASICs have claimed the network decisively.
DAG Loaded Into Memory
Your ASIC loads the current epoch's DAG file into its onboard memory. The DAG is a large pseudo-random dataset derived from the block header, used as the basis for all hash calculations.
Memory-Hard Hash Loop
For each hash attempt, the ASIC reads pseudo-random locations across the DAG. This memory-bound design is what makes Etchash different from SHA-256 — raw compute speed alone is not enough; memory bandwidth is equally critical.
Valid Hash Found
When the resulting hash falls below the network's difficulty target, a valid block solution is found. Your ASIC submits the proof-of-work to the pool, which relays it to the network for confirmation.
ETC Paid to Your Wallet
The block reward plus transaction fees are distributed to pool participants in proportion to submitted shares. ETC lands in your self-custody wallet on your pool's payout schedule.
Ethereum Classic does not halve like Bitcoin. Instead, it uses a "fifthening" — block rewards are reduced by 20% every 5 million blocks (approximately every 2.4 years). This gradual reduction is less dramatic than Bitcoin's 50% halving cliff, giving miners more time to adapt and creating a smoother revenue curve over the hardware's lifespan.
The maximum supply of ETC is fixed at approximately 210.7 million coins — five times that of Bitcoin in nominal terms, but issued on a different schedule. As of the most recent reduction, the block reward stands at approximately 2.56 ETC per block. The predictable 20% reduction schedule makes ETC miner revenue modelling more forgiving than coins with sudden halving events.
For hardware investment decisions, the ~2.4 year fifthening window is typically long enough for a well-priced ASIC to reach ROI before the next reduction — particularly for miners with electricity costs below $0.07/kWh.
Genesis era. Original block reward matching early ETH.
First fifthening. −20% reduction. Still GPU-dominated.
Second fifthening. Etchash activated. ASIC development begins.
Third fifthening. Current reward. Full ASIC era underway.
Next fifthening. Projected ~20% reduction from current reward.
Your Etchash ASIC does one thing with extraordinary precision — and that job is what keeps the Ethereum Classic network immutable and secure.
On startup, your Etchash ASIC builds and loads the current epoch's DAG dataset into its onboard HBM memory. The DAG size is predictable and fixed per epoch — a key advantage of Etchash over original Ethash for ASIC design.
The ASIC performs millions of Etchash computations per second, each requiring random memory accesses across the DAG. Raw compute speed and memory bandwidth must both be maximised — this dual requirement is what makes Etchash ASICs technically challenging to build and competitively differentiated.
When a valid solution is found, your pool submits it to the ETC network. With ~13-second block times, the network processes roughly 6,600 blocks per day. Pools distribute rewards proportionally based on each miner's contributed share of the pool's total hashrate.
ETC rewards hit your self-custody wallet on your pool's payout schedule, typically once or twice per day. No custodian. No lock-up. You own your ETC the moment it arrives — consistent, on-chain, real mining income.
The iPollo V1 Mini series makes Ethereum Classic one of the more home-friendly ASIC mining options. Smaller units like the iPollo V1 Mini SE consume only 240W — quieter and more manageable than a Bitcoin ASIC running at 3,500W. A single unit on a standard home circuit is easy to manage, and two or three can run from a garage without dedicated electrical work in most regions.
As with all home mining, your residential electricity rate is the primary constraint on profitability. At $0.08–0.10/kWh, compact ETC miners can be meaningfully profitable, especially for miners who prefer to hold ETC rather than immediately convert to fiat. For those on higher tariffs, consider whether a colocation arrangement would give you better long-term returns on the same hardware.
At industrial scale, large Etchash ASICs like the Antminer E9 Pro (3,680 MH/s at 1,580W) become the core of a highly efficient fleet. Industrial power contracts at $0.03–$0.05/kWh transform the unit economics significantly — at $0.04/kWh, an E9 Pro costs roughly $1.52/day to run, a fraction of what a residential miner pays.
ETC's relatively mature but less competitive ASIC market (compared to Bitcoin's SHA-256) means there is still meaningful opportunity for well-capitalised miners to deploy at scale without the extreme hardware arms race seen in Bitcoin mining.
The Etchash ASIC market offers a range of options from compact home units to industrial-grade workhorses. Three metrics determine your decision.
Etchash hashrate is measured in MH/s (megahashes per second) or GH/s for top-tier units. Entry-level iPollo V1 Mini units produce 130–300 MH/s, while flagship machines like the Antminer E9 Pro reach 3,680 MH/s. More MH/s means a proportionally larger share of daily ETC block rewards.
Higher = More ETCPower efficiency for Etchash miners is expressed in J/MH (joules per megahash). The best current units run below 0.45 J/MH. Older or low-spec machines may run at 1.0 J/MH or worse, which translates directly to a much higher daily electricity bill for the same ETC output.
Lower = Cheaper to RunUnlike most Bitcoin ASICs, Etchash miners come in a wide range of sizes. The iPollo V1 Mini is genuinely home-friendly at under 240W. Larger units like the E9 Pro are full rack-mount industrial machines at 1,580W. Match the form factor to your available space and electrical capacity before purchasing.
Match Your SetupEthereum Classic mining profitability is shaped by four interlocking variables. Get all four right and ETC mining can be a highly efficient, long-duration income stream.
ETC is a mid-cap asset with meaningful price volatility. Daily revenue in fiat terms moves directly with ETC/USD. Miners who maintain low operating costs can remain profitable across a wide price range. Historically, ETC has shown positive price correlation with Bitcoin and the broader crypto market — bull cycles in BTC have generally lifted ETC as well, though with higher volatility in both directions. Building your operation to be profitable at ETC prices 40–50% below today's level is a sensible risk framework.
ETC's difficulty adjusts every block to target the ~13-second block time. The ETC network saw a massive hashrate influx after Ethereum's PoS merge in September 2022 as ex-ETH GPU miners migrated. Since then, ASIC adoption has steadily replaced GPUs and difficulty has stabilised at a higher baseline. Always model your revenue using a conservative (higher) difficulty estimate — assume the network continues to grow as more ASIC units come online globally.
Power cost is your single most controllable variable. An Antminer E9 Pro running at 1,580W costs $1.52/day at $0.04/kWh. At $0.12/kWh — a typical European residential rate — that same machine costs $4.56/day, a difference of over $1,100 per year per unit. The compact iPollo V1 Mini SE at 240W is far more forgiving for home miners on residential tariffs. Always use your exact electricity rate when calculating projected returns.
ETC's 20% block reward reduction every 5 million blocks (~2.4 years) is more gradual than Bitcoin's halving but must still be factored into your ROI calculation. If you purchase an ETC ASIC today, model your returns assuming the next fifthening occurs within your expected hardware lifespan and reduces your daily ETC output by 20%. Operations with strong efficiency and low power costs typically absorb this reduction without issue; high-cost operations may find themselves marginal post-fifthening.
ETC has a healthy pool ecosystem. The most important factors are pool size (larger pools produce more consistent payouts), fee structure, payout method, and geographic server coverage. For ASIC miners running large hashrates, a PPS pool eliminates variance entirely — you receive a fixed payment per valid share regardless of block luck. For smaller operations, PPLNS typically results in slightly higher average payouts over time.
Always confirm that the pool you choose supports the Stratum V1 protocol expected by your specific ASIC model. Check the pool's minimum payout threshold — some pools require 0.1 ETC minimum, others 1.0 ETC — and make sure it matches your expected daily output so you aren't waiting weeks for your first payout.
One of the most reliable ETC pools globally. Good European and Asian server coverage, clean payout dashboard.
Competitive fee, low payout threshold of 0.1 ETC, multiple server regions. Popular with mid-size ASIC operations.
One of the largest pools worldwide. Higher fee but maximum payout stability — ideal for large farms wanting zero variance.
Extension of the popular ETH pool. Established infrastructure, reliable payouts, strong reputation in the Ethash/Etchash community.
Zero-variance PPS+ mode available. Good option for operators who need predictable daily ETC income for accounting purposes.
ETC has unique characteristics that catch new miners off guard. Avoid these before you invest.
Confusing ETC with ETH
Ethereum Classic (ETC) and Ethereum (ETH) are entirely separate blockchains. ETH is proof-of-stake and cannot be mined at all. ETC is proof-of-work and uses Etchash ASICs. Always double-check you are buying an Etchash miner — not an Ethash GPU rig — for ETC mining in 2024.
Using a GPU to Mine ETC
Since ASICs dominate the ETC network, GPU mining is no longer profitable for most setups. A modern Etchash ASIC delivers 10–30× the hashrate of a GPU at comparable or lower power draw. If you want to mine ETC competitively, an ASIC is the only practical hardware choice.
Ignoring the Fifthening Timeline
ETC block rewards drop by 20% every ~2.4 years. If you buy hardware without modelling what your daily ETC output will be post-fifthening, your ROI projections will be overstated. Always include at least one fifthening event in your profitability model.
Underestimating DAG Epoch Changes
Etchash DAG size increases at each epoch. While the doubled epoch length makes ASIC design viable, manufacturers must support DAG updates in firmware. Always confirm your ASIC model supports the current and upcoming DAG epoch — outdated firmware can cause hash errors or stale shares.
Choosing a Pool Based on Fee Alone
A pool with a 0.5% fee but frequent downtime will cost you far more in lost mining time than a stable pool charging 1%. Uptime, server latency to your location, and payout reliability matter more than a few tenths of a percent in fees.
Not Accounting for 51% Attack History
ETC suffered several 51% attacks between 2019 and 2020. The MESS upgrade significantly mitigated this risk, but ETC's security remains a consideration for long-term holders. As a miner, your primary exposure is operational — just be aware of ETC's attack history when sizing your position.
Everything you need to know before buying your first Ethereum Classic ASIC miner.
Browse our full selection of Etchash ASIC miners above — from compact home-friendly iPollo units to industrial-grade Antminer E9 machines. Our team will help you find the right ETC miner for your power budget and investment targets.
