Quiet men with discipline move mountains. Loud men with none get buried under them. image
Most men fear failure. I hunt it. Each scar is proof I built something worth bleeding for. image
Now I do Asics: Bottom line: M50S β‰ˆ 26J/TH vs S19j Pro β‰ˆ 29.5 J/TH. MicroBT wins on efficiency and field reliability. Bitmain wins on parts availability and swap speed. On 240 V, both are happy; Whatsminer PSUs are 220–240 V only and use one C19 lead; S19j Pro uses APW12 (200–240 V) and needs two power cords. Core specs MicroBT Whatsminer M50S: ~126–130 TH/s, ~3.3–3.4 kW, β‰ˆ26 J/TH, PSU P221B/P222B AC 220–240 V, single C19. Bitmain Antminer S19j Pro: 96–100 TH/s, ~2.8–3.1 kW, 29.5 J/TH, APW12 PSU AC 200–240 V, two power cords required. 240 V electrical differences Whatsminer: Integrated top-mounted PSU (P221/P222). Input 220–240 V only. One C19 β‰₯16 A per unit simplifies cord sets and PDU design. Antminer: APW12 modular PSU. Input 200–240 V. Two cords to the PSU; more outlets per rack, but easier PSU swap. Data-center ops: pros and cons Whatsminer M50S Pros: Better efficiency; strong stability reports at scale; single-lead power; fewer DOA/failures vs recent Bitmain lines per operator reports. Cons: PSU and chassis integration means heavier units and fewer third-party spares; vendor-specific parts (P221/P222) and firmware; slower init than some Antminers in tests. Antminer S19j Pro Pros: Huge aftermarket for hashboards, fans, APW12; fast boot; lots of repair docs and vendors; easy PSU swaps. Cons: Worse efficiency; community reports higher DOA/failure rates on several Bitmain 19/21-series batches; more cords and outlets to manage. Failure rate and labor cost model (use your scale) Field chatter shows Whatsminer ~2% annual failures vs Antminer ~8% depending on batch; S19j Pro is older but still sees board/PSU swaps. Treat these as assumptions, not guarantees. Example for a 1,350-unit farm, $150/hr tech time, 2.0 h per incident (R&R, test, ticket): Whatsminer @ 2% β‡’ 27 incidents/yr β‡’ $8,100 labor/yr. Antminer @ 4% β‡’ 54 incidents/yr β‡’ $16,200 labor/yr. Delta β‰ˆ $8,100/yr more labor for Antminer. Scale linearly with your unit count and your measured failure rates. Quick take If you want fewer headaches: M50S. If you want fastest swaps and cheapest parts cabinet: S19j Pro. On power distribution: both standardize cleanly at ~240 V PDUs; Whatsminer’s single-cord layout simplifies outlet density. My recommendation is MicroBT all day View quoted note β†’