Buying used Bitcoin miners without the guesswork
Buying secondhand mining hardware usually means trusting a photo and hoping the hashboards still work. At Bobbie Hash Matrix, every used Bitcoin miner we sell, including Antminer, WhatsMiner, and hydro-cooled units, is bench-tested and graded before it's listed. The hashrate and power draw on the page are numbers that specific machine actually produced, not a reprint of the factory data sheet.
We stock entry-level Antminer S19 series units for home miners and heat-reuse setups, alongside newer S21 and hydro-cooled ASIC miners for operators running on industrial power. If you're maintaining an existing fleet, we also carry individual hashboards, control boards, fans, and power supplies, so one dead part doesn't mean replacing the whole machine.
Every order ships from our Portland, Oregon warehouse within 1 to 2 business days, backed by a 6-month warranty and a 90-day return window. If a unit doesn't hash the way we said it would, we'll make it right.
Why buy from us
- Every unit bench-tested and graded before listing
- 6-month warranty on all miners
- 90-day return window, no fine print
- Ships from our own Portland, OR warehouse
- Real support from people who know the hardware
Popular Categories
The Best Offers
Recently Viewed
Common questions
Are these miners tested before they ship?
Yes. Every unit is powered on and run under load in our warehouse. We record the actual hashrate, power draw, and check hashboards and fans before it's listed for sale.
What's your warranty and return policy?
Every miner comes with a 6-month warranty, and you have 90 days from delivery to return a unit that doesn't match its listing. Full details are on our Warranty and Returns pages.
Do you ship internationally?
Yes, we ship worldwide from our Portland, Oregon warehouse. International orders can take longer in transit, and you're responsible for any customs duties or import taxes in your country. Reach out before ordering if you need a freight quote for a larger shipment.
Which states are these miners best suited for?
It depends on your power rate. States like Texas, Wyoming, and Iowa tend to have industrial power cheap enough for S21 and hydro-cooled hardware. Our S19-series units are a better fit for home setups or heat-reuse.
How do you accept payment?
We accept major credit cards and wire transfer through a secure, encrypted checkout. We also accept cryptocurrency, and orders paid in crypto get a 22% discount off the listed price. Payment details are never stored on our servers.