OBO prices added to post

Looking to downsize on my mining farm a bit.

All Hardware is located in KC MO or Springfield ILL.

All Payments will be made via ETH or BTC and will be using an ESCROW

Most hardware has been running since June 2017. 470s are a bit older.

All prices are OBO, just a starting point.

Prices
1070 $350
1080 - $400
470 - $200

Nvidia

10x1080 Gigibyte Turbo Fan OC edition
7x1070 Gigabyte Windforce OC
6x1070 MSI Armor

AMD
6x RX470 4gb Sapphire OC
6x RX470 4GB XFX Black
6X RX470 4GB Power Color Red Dragon
7x RX470 4GB MSI GamingX
3x RX470 4GB Sapphire Nitro
3x RX470 8GB Sapphire Nitro+ $250 on these

Power Supplies

4x EVGA 1300W G2 $250
200x PCIE 30" 6+2 Power cable $2.25ea
25x ParallelMiner 12 Port Breakout Board $10ea
15x ParallelMiner Pico PSU $35ea
25x HPE 750watt PSU

Motherboards

5x Biostar TB85 Mobo Combos Includes 4gb DDR3 and G3258 CPU $100
8x MSI Z270-A Pro Mobo Combo 4GB ddr4 and Pentium/Celeron CPU $175

Has anyone managed to pull this off? I haven't figured out how to change the fork of CCMiner.

I was afraid this is what may happen. Right now all I have is that one 12" intake fan. There are 80 cards in that room as well as a server rack behind there. Total power consumption in the space is close to 20-25Kw. The fan was supposed to be an exhaust but since it is so cold outside I had better luck with it setup as an intake

I am trying to work on a new strategy to cool my rigs. As usual I start down a path and it just isnt working as effectively as I would like it to. Things were working out alright when I was able to pull in -10C intake air from outside. Today it is 17C outside and it just isnt cutting it. It seems like there are two main approaches to take. You can contain the airflow to carefully direct it through all the cards or circulate so much air in the room that it doesnt matter. I figured I would post a few pics and see what suggestions others had.


Front of the rack, I was thinking of taking the rigs apart so I can space the cards out a bit more. Seems like if I could give them a bit more air space heat may be less of an issue


View of the rear of the rack and exhaust fan. I was planning on maybe upgrading this to a 24" fan that moves x4 air. As well as maybe putting an intake below that and ducting it to the other side of the room I have also considered putting some 30" warehouse fans behind the rack to move air through things better.


This is my current exhaust/intake. It seems that I have better luck when this fan is being used as an intake

I see so that whole cabinet picture you have is not a different AC box. The cards are in there. What do the temps look like? IS there anything you would change up about your setup? Do you think you could put more cards in there or have them closer together?

3" is a ton of space they can definitely be closer than 3 inch's assming there is plenty of airflow in the cabinet. Not quite sure how close tho.

I am having a hard time Mentally undertandsing what you have going there. Do you have those evga's in a sealed box and pumping Air-conditioned air through he box? If so how much air? Are the cards you can see all that is in the box? Overall how well has the design worked for you?

Will be sure to post things as I go. Was going to give it a few days here to get feedback from people. Always good to see what details other people catch that you would not have thought of yourself.

That cabinet is 24”x24”x48”. The plan was to hang the Gpus on a rail with a screw yes. It will be a bit tight, the idea here is really to optimize airflow. None of the dimensions are set in stone I just started playing with part layout to see what I could come up with.

There is almost an inch between them. My Gpus are currently this close together they just are not hung vertical like that.

I am working on a design for a new cabinet to contain my mining hardware neatly and better control heat. This current design allows for air to flow bottom to top and be exhausted. Looking for feedback and thoughts as to how to further optimize the design. I have toyed with the idea of just using a single row of cards as servicing the back row might be difficult.

Is anyone doing storj? Does it make the most sense for me to do many small folders or one big one? Any tips to maximize gains from it? I have 64tb off unused space on one of my arrays I could use for this.

Thanks

That is not what I paid, but yes some came from here. I had every intention of mining with them, vega drivers are just not something I am interested in dealing with. After a few weeks with these I have had enough.

Sorry should have included that. Cards are located in the US

Have

4 MSI
3 XFX
1 Sapphire

All used for 1 week. Mining with windows is not for me.

Will accept BTC/ETH as payment and will be using escrow to protect both the buyer and seller.
Shipping within the lower 48 states of the US is included

Thanks

So based on this ESD is only a concern with human interaction? the miners sitting by themselves in this dry air are at not risk?

Trying to potentially raise the humidity has ABSOLUTELY nothing to do with trying to bring down temps.

LOL, you have never run a datacenter have you....the humidity in a datacenter is typically kept over %50 to cut down on the potential of static discharge. At %12 the potential for static discharge is huge. I don't want the air to be super humid....It definitely SHOULD be higher than %12.

The room with my miners currently has a humidity level of %12. The air is very dry, I am not sure at what point it will become a problem....or what I could do about it? I suspect a humidifier wont accomplish much as the hot air is being exhausted outside, so any humidifying I do will just be exhausted out as well I think.