When a unit fails our stability threshold, the hash boards are usually fine. The environment is not.
Cooling in Coastal Busan
Haeundae and surrounding coastal areas present a specific challenge: high humidity combined with salt air accelerates dust adhesion on intake filters. We see intake temperature rises of 6–8°C above ambient in facilities that skip monthly filter cleaning.
A unit that passes at 24°C ambient may fail at 32°C — common in upper-floor rooms without dedicated HVAC during summer.
Practical Steps
- Clean or replace intake filters every 30 days in coastal locations
- Maintain at least 60 cm clearance behind exhaust vents
- Monitor intake vs exhaust delta; anything above 15°C warrants investigation
Power Supply Quality
We bench every unit on a reference PSU rated for continuous load at 80% capacity. Client units arriving with undersized or aged power supplies frequently show voltage sag after hour 12–18.
Signs of power-related instability:
- Hash rate drops that recover briefly after a power cycle
- Fan speed spikes without corresponding temperature rise
- Inconsistent power draw readings at the wall meter
What We Recommend
Match PSU rated capacity to 130% of the unit’s stated wall draw. Replace PSUs older than three years in continuous-duty applications. Use dedicated circuits — shared household circuits with refrigerators or air conditioners cause measurable sag.
Testing Both Variables
Our standard lab run holds ambient at 24°C. For operators in known hot or humid environments, we offer a stress profile that ramps ambient to 32°C during the final 12 hours of the run. This costs an additional ₩180,000 but surfaces problems a standard run would miss.