Practical writing on mining equipment decisions — drawn from our bench tests and client engagements.

Field Notes

14 July 2025

Why Hashboard Thermal Variance Predicts Early Failure

A 3°C spread between hashboards on a used S19 often precedes a 10% hashrate drop within 60 days. Here is what we measure and why it matters.

Field Notes

2 June 2025

Calculating True Cost-per-TH at Korean Electricity Rates

Purchase price is only the first line. We walk through a 24-month cost model for S19j, M30S, and S19 XP at ₩115/kWh.

Field Notes

18 May 2025

Fan Bearing Failure in Humid Daegu Summers

Humidity above 75% correlates with a 2.3x increase in fan replacements. Practical steps for warehouse operators.