For an air-cooled site, the Antminer S21 XP and Avalon A16-282T are candidates to compare on delivered price, electrical compatibility, and local support. For a site already equipped for hydro cooling, the S21 XP Hyd offers the lowest manufacturer-rated J/TH among the four models covered here. The Avalon A15XP-209T offers a lower listed acquisition cost than the A16-282T, with higher electricity consumption per unit of hashrate. There is no single best rig for every operation.

This guide compares four selected SHA-256 ASICs using manufacturer specifications and official product information checked on September 29, 2026. It is a scenario-based shortlist, not an exhaustive market ranking or a field-tested performance comparison. Prices and availability should be reconfirmed before purchase.

Why BCH Mining Hardware Is SHA-256 Hardware, Not a Separate Category

Bitcoin Cash (BCH) uses the same SHA-256 proof-of-work algorithm as Bitcoin. There is no BCH-specific ASIC chip design, and no manufacturer produces a machine that mines BCH exclusively. Any SHA-256 ASIC capable of mining BTC can, in principle, mine BCH, provided it is pointed at a BCH-compatible pool endpoint. This means the question "which rig is best for BCH" is really a question about which SHA-256 ASIC best fits a given site's power, cooling, and budget constraints — the same question a BTC miner would ask.

Because the hardware pool is shared across SHA-256 coins, the selection criteria below apply equally to BCH, BTC, and, where supported, BSV. The underlying SHA-256 hardware can remain the same, but mining economics differ with each network's difficulty, block subsidy, and transaction fees. Coin prices determine the fiat value of those earnings, while pool fees and payout methods affect how mining rewards are distributed to miners [4].

What Actually Determines the Best Rig for a Given Operation

Four variables typically drive the purchase decision more than brand reputation or marketing claims:

• Energy efficiency (J/TH): the manufacturer-rated joules consumed per terahash of computation, measured at the wall. Lower J/TH means less electricity is needed to produce the same hashrate.
• Cooling method and site infrastructure: air-cooled units need airflow, filtration, and acoustic planning; liquid-cooled units need coolant distribution, water-quality management, and often three-phase power.
• Electrical service: input voltage, current draw, and available site capacity must match the miner's rated requirements.
• Purchase price and total operating cost: upfront hardware cost must be weighed against electricity, hosting, and maintenance costs over the machine's service life.

Pool-side revenue estimates, discussed later in this article, are a secondary input. They help illustrate short-term gross earnings potential but do not replace a proper hardware and cost comparison.

Selected SHA-256 ASICs Suitable for BCH

The following machines are selected examples of SHA-256 hardware suitable for BCH mining. Figures are manufacturer-rated specifications, not independently measured or field-tested results, and actual performance can vary with ambient conditions and unit-to-unit tolerance.

Sources: BITMAIN specifications [1][2] and Canaan product pages [5][6]. The A15XP power figure follows the detailed parameter table; its product-page summary lists a different figure, as noted below.

Antminer S21 XP — a general-purpose air-cooled reference point

Bitmain rates the S21 XP at 270 TH/s and 3,645 W at 25°C inlet-air temperature, for an efficiency of 13.5 J/TH. The unit accepts 220–277 V AC input with a maximum current draw of 20 A, and its rated noise level under maximum fan load is 76 dBA [1]. Bitmain states a ±3% tolerance on hashrate and a ±5% tolerance on wall power and efficiency, so field results will typically fall within a range around these figures rather than matching them exactly.

The S21 XP is a practical benchmark for operators who have adequate electrical service and ventilation but do not run liquid-cooling infrastructure. Its noise rating also indicates that dedicated space and, in many residential contexts, acoustic isolation are necessary considerations rather than optional extras.

Antminer S21 XP Hyd — higher efficiency for liquid-cooled sites

The hydro-cooled variant is rated at 473 TH/s and 5,676 W at a 35°C inlet-water temperature, for an efficiency of 12.0 J/TH — a meaningful improvement over the air-cooled S21 XP on a manufacturer-rated basis [2]. This comes with materially different infrastructure requirements: the unit specifies 380–415 V three-phase AC input and a coolant flow rate of 8–10 L/min, with an inlet-water temperature range of 20–50°C.

This machine is better understood as an option for a professionally equipped facility that already has coolant distribution, water-quality management, and three-phase power, rather than as a direct drop-in replacement for an air-cooled unit. The efficiency gain is real on a nameplate basis, but it is inseparable from the added infrastructure cost of building or leasing a liquid-cooling site.

Avalon A16-282T — a comparable air-cooled alternative

Canaan's A16-282T is rated at 282 TH/s and 3,900 W at 25°C, for 13.8 J/TH, with a stated hashrate tolerance of -5% to +5% and a power tolerance of -10% to +10%. Its rated operating temperature range is -5°C to 35°C, and the listed warranty is 360 days from pickup from the seller, applying to the original purchaser who buys directly from Canaan [5]. Its efficiency is close enough to the S21 XP's that the practical choice between them may depend more on delivered price, local support, lead time, and voltage compatibility than on a meaningful nameplate-efficiency gap. As of September 29, 2026, the official A16-282T product page displays “Sold Out.” Confirm availability and the delivery schedule directly with the seller before treating it as an immediately purchasable option [5].

Avalon A15XP-209T — lower upfront cost, weaker efficiency

The A15XP-209T is rated at 209 TH/s and 3,720 W, for 17.8 J/TH — noticeably less efficient than the three machines above. As of September 29, 2026, Canaan's US-stock A15XP listing shows $6.8 per TH/s, compared with $13 per TH/s for the A16-282T; these are listed hardware prices rather than delivered quotes [5][6]. The A15XP page contains an inconsistency: its summary lists 3,667 W, while its detailed parameter table lists 3,720 W. This guide uses the detailed table, which is consistent with 209 TH/s at approximately 17.8 J/TH; confirm the specification for the offered batch with the seller [6].

This pairing illustrates a recurring trade-off in ASIC procurement: a lower acquisition cost does not automatically produce a lower total operating cost, because the machine's ongoing electricity draw is higher relative to its output. Where electricity or hosting is expensive, the efficiency gap can outweigh the initial price advantage over the machine's useful life; where electricity is inexpensive, the calculation may favor the cheaper unit. Listed prices from manufacturer shops typically exclude freight, customs duties, and taxes, and are subject to change.

Matching Cooling Method to Site Infrastructure

Air-cooled and liquid-cooled ASICs are not interchangeable purchase decisions; they imply different site designs.

Air-cooled units require sufficient airflow to remove heat from the enclosure, filtration to manage dust ingress, and a plan for noise, since large air-cooled ASICs commonly operate above 70 dBA. Liquid-cooled units remove heat more efficiently at the chip level but require a coolant loop, pumps or dry coolers, water-quality monitoring, and, in the case of the S21 XP Hyd, three-phase electrical service that a typical single-phase residential connection cannot provide. A site that is well suited to one cooling method is not automatically well suited to the other, and converting an existing air-cooled facility into a liquid-cooled one is a capital project rather than a simple hardware swap.

Total Operating Cost, Not Hardware Price Alone

A rig comparison should keep several cost components distinct rather than collapsing them into a single figure:

• Hardware purchase price
• Electricity cost
• Hosting charges, where applicable
• Cooling and site overhead
• Pool fees
• Downtime and maintenance

Before adding these costs, check what the hosting quote already includes. Add electricity, cooling, or other site charges separately only when they are not included in that quote. When using a pool earnings estimate, also check whether pool fees have already been deducted so they are not counted twice.

Electricity consumption can be estimated directly from a manufacturer's rated wall power using the formula: daily electricity use (kWh) equals wall power in watts divided by 1,000, multiplied by 24 hours. Under this formula, an S21 XP consumes approximately 87.5 kWh per day at its rated power, while an S21 XP Hyd consumes approximately 136.2 kWh per day. These figures describe electricity consumption only; they exclude site-level loads such as ventilation, pumps, dry coolers, and general facility overhead, and they should not be treated as a complete cost or profitability estimate.

Gross revenue estimates published by mining pools are a useful reference point but are not equivalent to profit. A pool's daily earnings estimate does not subtract the miner's electricity, hosting, hardware amortization, or maintenance costs, and it typically reflects recent network conditions rather than a forward-looking guarantee.

Connecting a SHA-256 Miner to a BCH Pool

Once a SHA-256 ASIC has been selected and deployed, the remaining decision is which pool and payout method to use. ViaBTC's BCH mining service supports both PPS+ and PPLNS payment methods, along with BCH Mining and Smart Mining connection modes [7]. Under PPS+, block-reward earnings are paid on a Pay-Per-Share basis while transaction fees are distributed through PPLNS; under PPLNS, both block rewards and transaction fees are distributed according to a miner's share of the pool's recent hashrate. Under its published fee schedule, the PPS block-reward component of PPS+ carries a 4% fee, while the transaction-fee component distributed through PPLNS carries a 2% fee. Under PPLNS, the combined block-reward and transaction-fee earnings carry a 2% fee [3][4]. These fee levels and the underlying reward-distribution logic can change, so current terms should be confirmed on the pool's fee page before selecting a method.

Neither payout method is universally superior; PPS+ generally produces steadier short-term payouts because its PPS block-reward component shifts block-discovery variance onto the pool. Its transaction-fee component remains linked to the pool's actual results under PPLNS. Under the PPLNS payment method, both components depend on the pool's actual mining results over the applicable window [3][4]. The appropriate choice depends on an operator's tolerance for payout variance and is a separate decision from hardware selection.

For connection details, follow ViaBTC's BCH Mining tutorial, which provides separate Stratum URLs for BCH Mining and Smart Mining, worker-name formatting, and miner configuration steps. Use the endpoint for the selected connection mode [7].

FAQ

Is there a mining rig built specifically for Bitcoin Cash?

No. BCH uses the SHA-256 algorithm, the same algorithm used by Bitcoin, so any current SHA-256 ASIC that supports BCH connections can mine it. There is no BCH-exclusive chip design on the market.

Can the same ASIC mine BTC and BCH?

Yes, provided the machine is SHA-256-based and the miner points it at a BCH-compatible pool endpoint rather than a BTC endpoint. Switching between coins is a configuration change at the pool-connection level, not a hardware change.

Is a liquid-cooled ASIC always the better investment?

Not necessarily. Liquid-cooled units such as the Antminer S21 XP Hyd offer a lower manufacturer-rated J/TH figure, but they require three-phase power, coolant infrastructure, and water-quality management that many sites do not have. The added infrastructure cost needs to be weighed against the efficiency gain.

Does a lower J/TH rating guarantee higher profit?

No. J/TH describes hardware energy efficiency only. Actual results also depend on the machine's purchase price, electricity rate, uptime, pool fees, network difficulty, and BCH market price, none of which are captured by the J/TH figure alone.

Where can BCH mining payout methods be reviewed before choosing a pool?

For ViaBTC, review the official fee schedule for payout definitions and component-specific fees, then use the BCH Mining tutorial for connection modes and configuration steps. Check both before setup, since terms and connection instructions can change.

References

All sources below were checked on September 29, 2026. Listed prices and availability are snapshots from that date.

[1] BITMAIN, “S21 XP Specifications”.

[2] BITMAIN, “S21 XP Hyd Specification”.

[3] ViaBTC, “Fees”.

[4] ViaBTC Help Center, “How are profits calculated?”.

[5] Canaan, “Avalon Miner A16-282T”.

[6] Canaan, “(US Stock) Avalon Miner A15XP-209T”.

[7] ViaBTC Help Center, “BCH Mining”.