Very clean used units, Grade A.

33 available.

Power supplies NOT included.

used miners availble HERE!

bump

current batch is sold out, please contact us if you're interested in the next batch.

next batch details and etc coming soon.

Take into consideration the airflow reduction in any filter medium you use.  Also consider how much filter surface area you need in order to accommodate your CFM rate.

Pocket filters are best for high airflow environments.  Most air filters will state in fpm.

Example from Google:
Select air filter dimensions (length, width, thickness). 2. Calculate airflow velocity in linear ft./min. using air volume rating of fan in cfm divided by surface area of air filter in sq. ft. (i.e. 200 cfm./0.50 sq. ft. = 400 fpm)

If your CFM is higher than the capacity of the filters they will loose efficiency and essentially stop filtering.  The more the discrepancy the more they don't work.

Most people vastly underestimate how much filter surface area they need for a bitcoin mine.

Also consider the added resistance the filters add when considering fan size / quantity.

Looking to sell your miners but don’t have the time or resources to do it?

GrayMatter Industries is now offering consignment as a service. We can receive, store, refurbish, and sell used miners on your behalf.

Many underestimate the complexities when it comes to turning over used equipment. Do all of your units work? Are they covered in dirt from running in a shipping container for the last year? People buying used miners want good running units, who wouldn’t? Our staff will test every unit to verify good working order. Units that need it will be cleaned and have necessary parts replaced to ensure its in the best possible shape when it goes up for sale. This gets you the most money for your used units and avoids angry buyers who would otherwise get dirty miners not running at optimal performance.

Take advantage of our established Ebay, Amazon, Newegg, and website presence. We have years of experience buying, and selling mining equipment and have the contacts, reputation, and capabilities to make your next equipment turnover a breeze.

Click here for more information.

New production batch is finishing up now and will be available for shipping 11/1/2019.

inventory clearance, prices lower on site, be ready for the next rally!

Updated pics with those of final version.

GrayMatter Industries is proud to introduce BlockPower, the first UL listed 60 amp 3 phase PDU specifically designed for miners.

This is a “direct wire” unit, meaning expensive plugs and receptacles are not needed, saving hundreds of dollars on installation.

Run 12 S9s on one PDU!

Highlights:

24 C-13 outlets
6x 25 amp breakers breakers
208v – 17.3kw useable @ 80%
220v – 18.3kw useable @ 80%
240v -19.9kw useable @ 80%
Supports 12 antminer S9s @ 208v

Current production batch is sold out, please contact us to order.

Click here to place orders on our website.

Here, at Gray Matter Industry, we are having a massive sale on our GPU cases to make room for our new design. We are selling our old stock at just a fraction over cost. Our 7 and 8 GPU cases are starting at $125 and our Antminer shelves are also on sale starting $150. If you are looking for cheap easy way to organize your miners click the link HERE. You can also reach us directly via email at sales@miningrigs.net

miningrigs.net

This worked for me on 2 units.  Unplugged all but one board then reflashed the firmware.  plugged boards back in and worked.

Kraken has denied me access to my account for almost 2 months now. 

First it was randomly locked and i was told i needed to provide verification in order to have it unlocked.  I provided the information as requested and have since been ignored for the last 5 weeks.  I've filed complaints with the BBB and FTC.  The BBB has come back with "no response from the company".  It appears they have stolen approximately $6k worth of crypto from me.  I am now in the process of seeking legal council on the matter. 

Please let this be a very real warning to anyone considering doing business with them.

Got a decent amount of these prepped for shipment now.

Like most everyone else right now we are completely full 


But yes, they make wonderful museum heaters 

We have a warehouse full of Monarchs that need to find new homes.  There are approximately 4,000 of them.  Most are 500gh models but there are 700gh ones mixed in.  Because of the volume we are unable to separate them so, assume all units being sold are 500gh.  

About half are on sleds, the other half are not.

A portion of the units with sleds will be sold through our website miningrigs.net.  Those will be sold 3 to a box for $180 + shipping and will be available soon.

The larger majority will be sold in bulk with 200 to a pallet (sledless) @ $25 per unit.  Please contact sales@miningrigs.net for details and freight quote.

If you're interested in the lot let us know and we can make a deal.

There are also power supplies that will be available.  More information on those coming soon.

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anyone confirm this is a legit bios?

don't really want to brick my mobo...

Nobody is being misled, unless you're the kind of sap that goes to the car dealership expecting the fully loaded model for the promo rate...

The ECON is functionally the same as V3.0, where V3.0 has some extra features and comes ready to go.

Most miners already have most if not all of the accessory parts and are looking for an easy conversion from the milk crate they're already running in.

Thanks, our focus has been primarily industrial mining and budget password cracking and rendering groups.  A home miner can easily put together a gpu rig frame for less than $100, but when your talking hundreds of gpu rigs you need something a little more organized.

Version 3.0 is out and ships same day / next day.

Economy version is in production and should be shipping by 4/1/17!

Don't be fooled by imitators, we've been manufacturing and selling GPU server cases since 2013.

Highlights:
– Standard 4U 19″ rackmount chassis compatible with almost all cabs / datacenters
– Screw mountable rackmount ears (no more bolts yay!)
– Case supports mATX and ATX motherboards.
– Front power / reset button w/ power and hhd led.
– Two piece lid for easier access to the components you’re servicing.
– Mounting hardware for 6 usb pci-e risers which securely host up to 12.5″ long video cards.
– Dual power supply capable with clearance for big PSUs.
– Mounts for 1x HHD / SSD above motherboard.
– Supports 3x 120mm fans w/ clearance for 200+cfm server grade fans (1.5” thick fans).
– Gray powder coat finish.

Head over to miningrigs.net for more pictures and to order.