Are you 100% sure it is drawing 950Watts for 2.9MH?

This sounds TOO good to be true

Very nice !!

Fantastic rig!

What is the motherboard, GPUs and power supply?

My new setup. 4x7950 mining LTC at 2200Kh/s

Very nice! What motherboard are you using?

I like it, solid and compact.
Nice job.

I think it's time you updated your signature.  

Where did you get your aluminum frame to build?  Did you order it somewhere or were you able to find it locally?

Just found this thread. I've got two DL580 G7's with E7-4870's. I'm currently mining with 30 GPU's on standard mobo's. Never could get GPU's to work in these. Is it still profitable to set these up and eliminate the "small" rigs? I am currently running ZEC, but would switch out to something else if profitability is there. Would definitely want to swap CPU's to 8837's.

Tried reading through the whole thread...but it's really long

Has anyone found any "cheap" 4U+ rack mount systems that can run 4-7 cards internally?

I have over 50x 550s.

12 x each rig.

Each does around 480h/s for 42w

Actually HiveOS and the HP's work GREAT.  Currently have 2 running 9 cards each.

It's HiveOS and the Dell R815's that DOESN'T and that's just a NIC driver issue.

Try to source them refurbished or on ebay with bad batteries. I bought 3 from ebay that were server based UPS that just needed new batteries and i picked them up off amazon for a few dollars each, i even went to my local thrift stores and picked up a handful of them for a few dollars and half of them even worked, just needed fresh batteries. The ones i got from local thrift stores i built custom lithium batteries from 18650 cells, i have been collecting thousands of them over time because i was planning to build a DIY tesla powerwall with them along with build battery packs for my Catrike bicycle that i converted to electric assist, i get them free from thrift stores, hardware stores from the recycle bin just ask the store managers, and colleges. The most i got from thrift stores because when someone donates a laptio they cant resell it, so it gets scrapped and disassembled and they pay for someone to take the batteries away.

This is some of the batteries i got last month from going around and asking politely from many locations and picking up some from locations that told me they would place them to the side for me...


Here are some cells im still slowly testing out, i bought 4 tester/chargers units a while back that allows me to test 16 cells at a time, so its only time to test them, i put them on the test and forget about them really and come back when i remember about them, write the capacity on the side of the cell and move on, i store them in bins based on the capacity so my wall cells i assemble have the highest capacity cells. I have probably close to 40,000 cells assembled in my diy powerwall to date that ive never purchased...

Under Linux, I have 6 Nvidia cards working.  Not sure what is up with the Proliant G7 series.  I have tried a DL360, DL380 and the DL580 and none of these will boot with more than 4 GPUs installed.  Windows will lock up at loading screen.

Slap a USB stick with HiveOS on it and 6 get recognized easily.

I have a ML350P G8 that has taken 6 GPUs in windows easily.  

Edit* Make that 9 1060s in one 580 in HiveOS.

I mentioned to try 896x8 not 896x4 (or was that a typo?)

Try with --opencl-launch 896x8

Yes,  i am getting 870-880 H/s with RX570,  with Claymore 11.3 (SMOS) , in Windows,  you can reach 900-1000 H/s with Cast-XMR.