Topic: Building Cheap Miners : My "Secret" - page 15. (Read 60235 times)

Miners, it kind of sounds like you are telling the OP what to do with that post even though I think you are pointing it at the guy asking the original question...

Sundownz, what is the average payout you are seeing with nemos miner if you don't mind sharing?  I'd like to compare if I can.  ps  Add on FB...

Oh and I got my X3 yesterday.  Talk about feeling like I have NH on demand whenever I want it.  This one little box consumes only 550w and puts out over 8x more power than I can produce at 1/25th of the power consumption of the rest of my gear.

If you also want to mine on the CPU you will need one that has the AES instruction. The Intel Xeon 3500 series does not have that instruction.

These do:

Intel Xeon W3670, W3680, W3690 have the AES instruction
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%203600.html

You can also use Xeon's from the 5600 family in the Z400. I would only recommend X5650 or higher processors.
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%205600.html

I open them up and remove the 18650 cells, then i test them in clusters to find out the cells health and capacity with a bulk tester.

I have used them for numerous projects, i built 2 batteries for my electric assist catrike bicycle i ride weekly around town, i built 5 powerwalls so far that are all linked together, and i replaced the batteries in my RV with these so when i travel i have far superior capacity compared to the old 4 lead acid batteries it had previously.

In regards to flammable, they are very stable cells if you use safety precautions... i put a glob of hot glue on the positive end when i finish testing them and sort them by capacity, just so there is far less chance of a short happening in the sorting containers...

My current reason for collection more is im currently building a 3 wheel motorcycle that i plan to power via electric motor.

 

Yes I won't use anything else but the Z400s at this point.

You don't HAVE TO change the CPU or add more than 4 GB for a 3 card rig, no.

sundownz, are the z400s still your desktop of choice for making a 3-4 gpu rig? I know you switch out a lot of the parts, but if I just get a z400, a new PSU, and use your PSU connector trick, can I just run 3 gpus on it like that? Don't really need a fast cpu or more than 4 gb ram, I don't think?

awesome! THANK YOU!

edit: Do these have PSUs that could power multiple cards though?

Do not buy Dell T5400's for mining. The CPU's on them are not useful for mining as they lack the AES instruction. Also these systems use power wasting FB-DDR2 memory. Take a look at that huge fan just to cool the memory. These systems also have an issue with power supply failures. I bought four of these systems in 2015 (before I got into mining) and got rid of them by 2017.

A better option is to buy Dell T3500 Workstations and change the processor to one of the Intel Xeon 3600 processors that have the AES instruction.

Dell T3500's for about $90 right now
https://www.ebay.com/sch/i.html?_from=R40&_nkw=dell+t3500&_sacat=0&_sop=15&LH_BIN=1

Intel Xeon W3670, W3680, W3690 have the AES instruction
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%203600.html

You can also use Xeon's from the 5600 family in the T3500. I would only recommend X5650 or higher processors.
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%205600.html

I found that Dell t5500s are more expensive, but t5400s I'm seeing for less than $200, and they have a 875w PSU. I'm kinda thinking that's a steal and a super good way to get rigs and up running cheap and fast. I don't I'd have to buy anything besides the GPUs and risers, right?

For those here who are running Ubuntu Linux 16.04 or HiveOS on HP Servers here is how to install HP Support Software and access very useful data from those servers:

Open Shellinabox to the HiveOS server or on Ubuntu go to a command line prompt:

Do the following commands/editing:

Hint: for those using Shellinabox rather than typing it is easier to copy (CTRL C) the text then right click in the Shellinabox and select "Paste from Browser"

#1  sudo mc
#1a go to /etc/apt/sources.list.d directory
#1b touch hp-proliant-support-pack.list
#1c add this line into the above file: deb http://downloads.linux.hpe.com/SDR/downloads/MCP/ubuntu xenial/current non-free
#1d F2 to save file, F10 to exit edit, F10 to exit MC

#2: sudo apt-get update

#3: sudo apt-get install hpsmh hp-snmp-agents hp-smh-templates hponcfg hp-health

Now you can access server data using the HPASMCLI Commands

HP ProLiant Servers - HPASMCLI Commands
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03474917

To access the power consumption readings on a server running a Linux operating system (OS), sum the “Power” data from all power supplies that are present. The Linux command below will return the power supply data needed:

hpasmcli -s "show powersupply"

This is an example from one of my HP DL580 G7 Servers:

root@dl580_g7_1:~# hpasmcli -s "show powersupply"

Power supply #1
        Present  : Yes
        Redundant: No
        Condition: Ok
        Hotplug  : Supported
        Power    : 390 Watts
Power supply #2
        Present  : Yes
        Redundant: No
        Condition: Ok
        Hotplug  : Supported
        Power    : 425 Watts
Power supply #3
        Power Supply not present
Power supply #4
        Power Supply not present

I currently am on 120 VAC so these power supplies can only supply 900 watts. The above 815 watts is too close to that limit so I am running the system using the "Balanced Power Mode" which shares load between the power supplies.

When I get these on 240 VAC the power supplies can supply 1200 watts each so I will switch to "High Efficiency Mode" which will pull power from only one supply and have the other in redundant very low power mode. This will save me some watts. I like that I can use this command to see my power usage even when running on 240 VAC.

Another interesting feature is that when you switch mining algorithms or add additional GPUs you can see the power usage differences. I have two of my HP DL580's using 8x GTX 750's while one still only has four GTX 750's. The power difference between them is 170 watts so I know that each GTX 750 is using 42.5 watts.

Original details on how to do this was found here:

Install HP Support Software in your Ubuntu Server
https://thejoyofstick.com/blog/2013/04/28/install-hp-support-software-in-your-ubuntu-server/

I modified the above to fix installation errors.

Other interesting HP commands:

hpasmcli -s "show temp"
hpasmcli -s "show IML"
hpasmcli -s "show fans"

Note: doing this command: hpasmcli -s "clear IML"
will cause a "*** buffer overflow detected ***: hpasmcli terminated " and stack trace but does clear the IML log

root@dl580_g7_1:~# hpasmcli -s "show IML"

The IML Log is empty.

Clearing the log is useful if you purchased the system used. That way any issues that get logged now are from when you were using the system and not stale issues from before you had the system.

You don't need to dedicate a machine for this, running it on a worker will work just fine too.  It's just a relay.

Thanks I will check into that -- maybe I will use my DL580 HP machine for that =)

Sundownz:

Make your life easier, take one of the R815's and install this and then point everything doing CN variants at it.

https://github.com/sebseb7/cryptonote-proxy  Literally point and click to change coins once setup for ALL boxes with ONE click.

Hive makes it super easy too.  You can't one point all your boxes but once wallets are setup properly, it's a snap to change miner and wallet on the fly.

Because I want a MN before everyone else gets it...   You have PM.

Why not share with the class and help out fellow miners.

Not to toot my own horn, well okay I am  , but I got started on HiveOS March 28th. I got the idea to check out HiveOS from spinx who should get the original credit.
https://bitcointalksearch.org/topic/m.33341701

Doing some PMs with PharmEcis regarding the DL580's I mentioned how well HiveOS was working with them. He moved to using HiveOS on the DL580's because Windows was being a bitch on them.

Glad to share info with fellow miners so that we all may prosper.

I take it that you mean to use cheap hard drives in mining rigs.

I'm using cheap 60GB SSD's that I pick up for $14-$17. Much more reliable than spinning hard drives and use less power.

I still have a ways to go in refining it all -- Linux at all is completely new to me.

But yes... the proxy idea sounds solid & I have been meaning to try out HIVEOS as well.

Thanks for the suggestions =)

What?  There is mining that can be done with hard disk drives but you need TERABYTES and it don't pay.  You might even be storing goat porn.



Jacob, you better check your PM this time. 

It's the quirks, once you figure them out, it's actually WAY easier and WAY more stable.  I don't really touch them anymore.  Now my Windows Vega boxes... GRRRR

Your reading comprehension must be slow.  The z400's came with 4 PCIE slots and like a 450W PSU.  He's been using like 40 of them perfectly fine.  In fact, he's even got more than 4 cards running in them thanks to PCIE 4 in 1 splitters.

The system energy is minimal and all CPUs are mining as well.  Another thing to point out is that when an 8 GPU rig goes down, you have much more hashpower out of the game.

Also, with HIVEOS, system updates are effortless.  Literally, even for a ton of boxes.

And honestly, Sundownz should be running a proxy because then literally all your boxes point at one, and then you make changes on the ONE, and EVERYTHING points to whatever you changed it to...

Please, this thread now has multiple combined years of testing these theories with the various people doing it.