NerdQAxe++ Hydro: Water Cooled 6 TH/s Bitcoin Miner

Four chips, one water loop, and a machine you can keep in the room you work in.

Why water on a desktop miner

A four chip board produces about as much heat as a bright desk lamp. Air cooled designs deal with that by spinning a small fan very fast, and small fans at high speed are the reason most people move their miner into the cellar. The Hydro takes a different route: a water block sits on the chips, a pump moves the heat into a radiator, and a larger fan pushes it out slowly. Same heat, far less noise.

What the numbers mean

Around 6 TH/s at roughly 100 W works out to about 16.7 J/TH. That is close to what a single chip board manages, which is unusual for four chips: keeping the silicon cool is what lets it hold its clock instead of throttling back.

Built as one piece

• The loop arrives filled, bled and tested. There is nothing to assemble and nothing to top up.
• The 1.9-inch colour display shows hashrate, chip temperature, power draw and your best share.
• The frame holds board, pump and radiator in one unit, so the miner stands on a desk without a separate mount.

Setup and control

The Hydro runs AxeOS, the open source firmware of the Bitaxe and NerdAxe family. Power it up, join the Wi-Fi network it opens, enter your own network and your Bitcoin address, and it starts hashing. After that everything happens in a browser tab on your home network. Our NerdQAxe setup guide covers each screen.

Solo or pool

Point it at a solo pool and every hash is an entry for the full block reward, paid to an address only you control. Point it at a shared pool and the payouts are small and regular. The setting is one field in AxeOS and you can change it whenever you like.