Best Blake2b Miners for Maximum Efficiency 2026 — Ranked
Updated June 6, 2026 with live profitability data
Blake2b for maximum efficiency sits at the intersection of how the algorithm behaves and what the use case demands. Blake2b is a cryptographic hash function optimized for speed on 64-bit platforms, offering performance improvements over Blake and SHA-256 while maintaining security. Used by Siacoin (SC) and Hyperspace (XSC), Blake2b emphasizes raw throughput—it can hash data faster than MD5 while being far more secure. This speed advantage translates to ASICs that can test more nonce values per joule of energy.
Efficiency-focused mining prioritizes the lowest joules-per-terahash (J/TH) metric, minimizing electricity costs per unit of hashrate. The most efficient miners use cutting-edge chip processes (5nm-7nm), optimized power delivery, and advanced cooling to extract maximum hashrate from every watt. Efficiency matters most when: (1) electricity costs are high, (2) mining through bear markets when revenue is tight, or (3) operating at scale where efficiency differences compound into substantial profit margins.
The question for maximum efficiency buyers is whether Blake2b's strengths line up with their priorities — and where they will have to compromise. Blake2b mining appeals to those interested in decentralized storage (Siacoin's use case), miners seeking efficient algorithms with lower power bills, and those diversifying into storage-focused blockchain projects.
At a Glance: Blake2b Miners for Maximum Efficiency
Our database has 9 Blake2b miners that qualify for maximum efficiency, scored on use-case-weighted criteria — the top pick scores 95.0/100. Efficiency across this set ranges from 0.8 to 818.2 J/TH, with the Obelisk SC1 Slim drawing the least power per terahash. For raw output, the Bitmain Antminer A3 (815Gh) leads at 815.0 GH/s.
Top Blake2b Miners for Maximum Efficiency
| Rank | Miner | Hashrate | Power | Efficiency | Noise | Score | |
|---|---|---|---|---|---|---|---|
| 1 |
Bitmain Antminer A3 (815Gh)
Ranks #1 for maximum efficiency: 1.6 J/TH. |
815.0 GH/s | 1,275W | 1.6 J/TH | — | 95.0/100 | View Details |
| 2 |
Obelisk SC1
Ranks #2 for maximum efficiency: 0.9 J/TH. |
550.0 GH/s | 500W | 0.9 J/TH | — | 95.0/100 | View Details |
| 3 |
Obelisk SC1 Slim
Ranks #3 for maximum efficiency: 0.8 J/TH — the lowest energy draw per terahash in this list. |
550.0 GH/s | 450W | 0.8 J/TH | — | 95.0/100 | View Details |
| 4 |
Goldshell SC5 Pro (11Th)
Ranks #4 for maximum efficiency: 256.4 J/TH. |
11.0 TH/s | 2,820W | 256.4 J/TH | — | 6.5/100 | View Details |
| 5 |
StrongU STU-U2
Ranks #5 for maximum efficiency: 228.6 J/TH. |
7.0 TH/s | 1,600W | 228.6 J/TH | — | 5.9/100 | View Details |
| 6 |
Innosilicon S11 SiaMaster
Ranks #6 for maximum efficiency: 314.0 J/TH. |
4.3 TH/s | 1,350W | 314.0 J/TH | — | 5.6/100 | View Details |
| 7 |
Halong Mining DragonMint B52
Ranks #7 for maximum efficiency: 360.3 J/TH. |
3.8 TH/s | 1,380W | 360.3 J/TH | — | 5.5/100 | View Details |
| 8 |
Obelisk SC1 Immersion
Ranks #8 for maximum efficiency: 727.3 J/TH. |
2.2 TH/s | 1,600W | 727.3 J/TH | — | 5.3/100 | View Details |
| 9 |
Obelisk SC1 Dual
Ranks #9 for maximum efficiency: 818.2 J/TH. |
1.1 TH/s | 900W | 818.2 J/TH | — | 5.1/100 | View Details |
Score Methodology: Miners are ranked using a weighted algorithm that prioritizes efficiency (70%), hashrate (20%), and value (10%).
Blake2b and Maximum Efficiency: The Fit Analysis
Power Characteristics: Blake2b miners consume 500W-2,200W producing 1.5-6 TH/s. The algorithm's efficiency varies widely (15-40 J/TH) based on chip architecture—optimized ASICs show significant advantages over general-purpose designs.
Heat Output: Blake2b ASICs generate 1,700-7,500 BTU/hr, positioning them for small to medium room heating. The efficient algorithm means less waste heat per useful hash compared to older functions.
Noise Profile: Blake2b miners typically operate at 55-70 dB. The moderate power requirements allow for balanced cooling—quieter than industrial SHA-256 but louder than desktop-class miners.
Use Case Fit: Efficiency miners pay premium upfront prices for long-term operational savings. A 20 J/TH miner might cost $6,000 while a 30 J/TH equivalent costs $3,000—the $3,000 premium must be recovered through electricity savings over 12-24 months. High electricity rates accelerate this payback; cheap power makes the premium harder to justify.
For maximum efficiency specifically, that means weighing these traits against the practical checklist: Efficiency mining requires: (1) Capital for premium hardware ($3,000-12,000+ per unit), (2) Understanding that efficiency leaders change annually as new ASICs launch, (3) Electrical infrastructure for high power density (efficient miners often consume 3,500W+ to achieve top J/TH), (4) Long-term operational mindset—efficiency advantages compound over months/years, and (5) Acceptance that peak efficiency often means peak noise (75-80 dB).
Need Help Choosing the Right Blake2b Miner?
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Last reviewed May 25, 2026.
