WhatsMiner M73 512T vs SEALMINER A4 Pro Hydro

Both are hydro-cooled Bitcoin miners in a flat format of almost the same size, both for 380–480 V AC, drawing almost the same power. MicroBT lists the WhatsMiner M73 at 512 TH/s on 7,424 W (14.5 J/TH); Bitdeer rates the SEALMINER A4 Pro Hydro at 680 TH/s on 7,412 W (10.9 J/TH, at 35 °C inlet coolant). For 12 W less, the A4 Pro Hydro gives about 33% more hashrate, so each terahash takes about 25% less electricity. The M73 measures 86 × 483 × 663 mm with handle; the A4 Pro Hydro 482 × 665 × 86 mm (W × D × H). The M73 is specified for coolant at 25–55 °C in normal mode and at least 10 L/min; the A4 Pro Hydro for 20–55 °C and at least 10.2 L/min with pure water. The table below and the calculator work out what these figures mean with current network data.

Figures: MicroBT and Bitdeer specification pages for WhatsMiner M73 and SEALMINER A4 Pro Hydro, checked 2026-10-10.