Second-Generation ASIC Equipment Guide
Reference table of mining hardware at 0.05 TH/s and above still commonly deployed in South Korean hosting facilities during 2026.
This guide catalogues second-generation ASIC models our reviewers encounter most often in Guro-gu workshops and metropolitan hosting sites. Hashrate figures reflect nominal manufacturer ratings; field results vary with inlet temperature and power quality.
Reference Table
| Model | Manufacturer | Nominal Hashrate | Typical Power | Notes |
|---|---|---|---|---|
| Antminer S19 | Bitmain | 95 TH/s | 3250 W | Common baseline unit; watch for batch-specific hashboard revisions |
| Antminer S19 Pro | Bitmain | 110 TH/s | 3250 W | Higher efficiency per watt; fans wear faster in dusty basement installs |
| Antminer S19j Pro | Bitmain | 104 TH/s | 3068 W | Frequently found in Korean co-location; firmware 2024+ recommended |
| Whatsminer M30S | MicroBT | 88 TH/s | 3344 W | Solid second-gen choice; PSU compatibility varies by batch |
| Whatsminer M30S++ | MicroBT | 112 TH/s | 3472 W | Still economical above 0.05 TH/s floor at 2026 industrial tariffs |
| Antminer S19 XP | Bitmain | 140 TH/s | 3010 W | Late second-gen; often retained for efficiency rather than raw count |
| AvalonMiner 1246 | Canaan | 90 TH/s | 3420 W | Less common in Seoul; spare hashboards harder to source locally |
The 0.05 TH/s Floor
We use 0.05 TH/s (50 GH/s) as a practical review threshold because units below this level rarely justify dedicated bench time and onsite travel in the current Korean hosting market. Operators keeping legacy SHA-256 hardware for hobby or heat-recovery purposes may still contact us, but standard report templates assume second-generation equipment.
How We Use This Guide
When you request an ASIC Evaluation Report, we match your serial numbers against manufacturer batch data and this reference table. Deviations trigger deeper hashboard diagnostics.
Facility Considerations in Seoul
Basement hosting remains common in Guro and Geumcheon districts. Second-generation units with stock air cooling often require inlet temperatures below 30°C to hold nominal hashrate. Our Thermal & Power Audit addresses these constraints directly.