iBeLink BM-S3+ 25 TH/s Blake2B Siacoin Miner

25 TH/s on the Blake2B-Sia algorithm at 3,400W, an efficiency of 136 J/TH, which iBeLink also expresses as 0.136 J/GH. Both figures carry a tolerance of about plus or minus 5 percent, so treat them as ratings rather than guarantees and check what an individual unit reports under sustained load. It is the highest hashrate and the most efficient Blake2B-Sia miner currently in production, and iBeLink released it in April 2025 at the top of its Siacoin line.

Because J/TH figures only compare between machines running the same algorithm. A modern Bitcoin ASIC quotes around 13 J/TH, but it performs entirely different computational work against an entirely different difficulty scale, so setting the two numbers side by side tells you nothing. Judged against the hardware it actually competes with, the BM-S3+ leads the category: the iBeLink BM-S3 is about 163 J/TH, Goldshell's SC6-SE about 194, the Goldshell SC5 Pro II about 236, the SC5 Pro about 256, the iBeLink BM-S1 Max about 263, the Innosilicon S11 SiaMaster about 321 and the iBeLink BM-S1 about 346. Every Blake2B miner looks inefficient next to a Bitcoin miner, which is why the comparison that matters is within the algorithm.

Against the BM-S3 the comparison is unusually clean: 25 TH/s versus 19 TH/s is about 32 percent more hashrate, for 3,400W versus 3,100W, about 10 percent more power. You gain output and improve efficiency simultaneously rather than trading one for the other, so on a fixed electrical budget the BM-S3+ returns meaningfully more Siacoin hashrate per kilowatt. Against Goldshell, which is the main alternative brand in this category, the gap is wider: the SC5 Pro II released in January 2026 runs 14 TH/s at 3,300W for roughly 236 J/TH, so the BM-S3+ produces about 79 percent more hashrate while using roughly 42 percent less energy per terahash. On current published specifications there is no Blake2B-Sia machine that beats it on either measure.

Siacoin (SC) is the target and realistically the only one, because Blake2B-Sia is a Sia specific implementation. That is concentrated exposure: unlike a SHA-256 machine that can move between Bitcoin, Bitcoin Cash and other chains when economics shift, this hardware has no fallback coin. It is also worth knowing that Sia has previously changed its protocol in ways that affected ASIC compatibility. The Innosilicon S11 SiaMaster, once a mainstream Sia miner, is now listed by mining databases as targeting SiaClassic and SpaceCash rather than mainline Siacoin. That is history rather than a forecast, and current generation hardware sits in a different position, but confirming present network compatibility with your supplier before a volume order is a specific and reasonable question to ask. Note also that several retail listings for this model are simply wrong, describing it as a Scrypt miner, claiming Decred compatibility or listing its coin as Bitcoin. None of that is accurate.

Sia is a decentralised storage network where users rent out spare disk capacity and renters pay in Siacoin to store data across it, with the blockchain handling contracts and payments. Mining secures the network on Blake2B. The case for mining it is diversification: Sia's difficulty and price respond to storage demand and its own development cycle rather than to the Bitcoin halving cycle, so Blake2B hardware can earn well during periods when SHA-256 machines are under pressure. The counterweight is that Sia is a small capitalisation network, so price and difficulty move faster and further in both directions than on Bitcoin and liquidity is thinner when you come to sell what you mine.

190 to 240V AC single phase, drawing 3,400W continuously, which is roughly 14 amps at 240V and fits a 20 amp circuit with sensible headroom. It needs a dedicated circuit rather than a shared household socket, but it does not need three phase service or industrial distribution, which makes it considerably simpler to deploy than a hydro cooled Bitcoin miner of similar power. That said, 3.4 kW is well beyond what a normal domestic ring circuit should carry alongside other loads, so have the circuit checked before delivery. If you are installing several units, size the panel on measured draw from the first machines rather than on the rated figure alone.

75 dB from its fan cooled design, which is industrial noise on the level of a vacuum cleaner running continuously, and 3,400W of draw becomes roughly 11,600 BTU per hour of heat. That rules out living spaces entirely. A dedicated equipment room, a ventilated garage or outbuilding, or a hosting facility are the realistic options. Give it a clear intake at the front and an unobstructed exhaust path at the back, keep inlet air within the 5 to 40 degrees Celsius operating range, and make sure hot exhaust cannot recirculate into the intake, which is the most common cause of thermal throttling and shortened hardware life in small deployments.

That depends on the Siacoin price, Sia network difficulty and your electricity rate, and on a small cap network the first two move faster than they do on Bitcoin. At 3,400W the power rate is the lever you actually control, and because Blake2B hardware has no alternative coin to switch to, your return is tied entirely to how Sia performs. Published daily figures for this model vary widely between sources and date badly, so they should not be used for planning. Run your own electricity rate through the live calculator, model a range of Siacoin prices rather than a single one, and size any purchase so that a weak stretch does not force you to sell hardware at the wrong moment. What the hardware does give you is the best efficiency in its category, which means it stays viable at electricity rates where other Blake2B machines stop working.

Setup follows the standard ASIC workflow. Confirm a dedicated 190 to 240V circuit with proper grounding, place the unit where 75 dB and 3.4 kW of heat are acceptable, connect the power cable and an Ethernet cable to your router or switch, then power on and find the miner's IP through your router's DHCP table or an IP scanner. Open the web interface, change the default credentials immediately, and enter your Sia pool address, worker name and Siacoin wallet address. Sia is mined on pools that support Blake2B, and because the pool landscape for a smaller network changes more often than Bitcoin's, check which pools are currently active and well populated before committing rather than working from an old list.

Maintenance is standard air cooled ASIC upkeep: clear dust from fans and heatsinks regularly, inspect hashboard connectors periodically, keep the unit inside its rated temperature range and treat fans as a wear item over a long deployment. Distributor listings commonly cite a six month iBeLink factory warranty, though terms vary by channel and batch, so confirm coverage on your units at order; iBeLink is a smaller manufacturer than Bitmain, so spare parts and third party repair options are less widely available and that belongs in a multi unit decision. On hosting, MillionMiner operates managed US facilities with the single phase industrial power and ventilation this hardware needs, which is worth pricing alongside the machine because at 3,400W the electricity rate is the largest ongoing variable you can influence. On availability, Blake2B hardware moves in and out of stock quickly when Siacoin interest rises and iBeLink production runs are smaller than Bitmain's, so contact sales through the Get a Quote button for current availability, batch timing and pricing rather than relying on a published date.