Hi guys, I just got a call by my mining partner. We are running 6 of the following sertup in a warehouse atm:

- asus z270 prime
- celeron g3900
- 4gb ddr4 ram
- 8x sapphire nitros rx580
- hp dps1200 server psu
- 160w pico psu

he just installed new wires for power to place the miners at a different spot in his warehouse. now he is telling me that on the new place when the miners are just started up, the power consumption is about 3.5A at 230V wich should be around 800W. After 20 minutes, this climbs to 4,8A or 1100W. I told him this is very unlikely but he claims that he has professional measurement equipment which should be ok.

I only can check the gpu power consumption per software by remote which is around 85W per card and doesnt change. all fans are running at 100% so when miner gets warm that shouldnt make such a big difference. The only thing I could imagine is that these server power supplies with breakout board are pulling close to their 1200w max after some time regardless if the system needs it or not.

what is happening here please?

Hi all,

I'm just trying to achieve what can be read everywhere in the www: mining ETH with 30MH/s with this card. I am mining with Linux/Ubuntu/rxOC, tried ohgodatool but it seems I can not move around a BIOS mod.

So right now I am trying but I even fail at the first step, wich is backup the original BIOS. When trying 'atiflash -i' I get 'Adapter not found'. Tried in Ubuntu with atiflash 4.07, also bootable dos stick. I can only find threads where people bricked their cardsa after trying to flash the BIOS but I ain't even tried so that is strange. Someone has an idea?

BR

Hey guys,

I just had a nice idea for an offline hardware wallet but I am not sure if this is possible to do so. I googled some time today but I cant answer my own questions. so lets see:

I need to write my code with old C language. afaik bitcoin is written in c++. I cant find good tutorials except one for how to write an own bitcoin wallet. this tutorial is made with c#.

So before I move on with my idea I'd like to find out if it is possible to write a bitcoin wallet, at least the private key generating part, in C.

anybody?

Hey guys,

I had BTC on bittrex since 24th of oct. I moved them to electrum wallet. Now I am not sure where exactly the fork happened nor where I had some BTC but I ve read that either way I should have some now because bittrex said they will credit people with bitcoin gold if they have some btc. I dont. If my btc where at electrum wallet when fork happened, how do I get these bitcoin gold coins?

regards

Hey guys,

atm Im mining on nicehash with 8x 1060s running with 76w limit. as nicehash is switching through most profitable protocols lets just say on average this rig makes 8-10usd per day in the past few weeks. This doesnt include power costs. I hope this is the best way to compare also with guys who mine a specific coin/protocol.

So I am planning a second rig but now I am unsure what the best GPU nowadays could be. It seems my country has rx580s in stock again so at price of around 300€ I would prefer these over the 1060s.

I was also thinking about RX vega. the 56 is around 475€ here, 64 at 500€. What do you suggest? I mostly care about efficiency, wich means $/watt. oh yes, i forgot to mention: nvOC OS mining only! So rig will be using linux as a basis

Hi folks,

I am currently mining musicoin with 8x 1060 plus 2x 650W ATX PSU. I would like to switch to a Server PSU + Breakout Board. These breakout boards come with 10x PCI-E cables currently on eBay.

I want to split one of these PCI-E cables so I can power one card plus one riser, wich I unfortunately bought with molex connector. I searched a lot but didn't find any Y cable with PCI-E plus male molex connectors.

I thought about buying a PCI-E to double PCI-E Y cable and solder one male molex connector by myself to get what I want but I am not sure if this works as there seems to be no 5V at PCI-E and I am not sure if the risers need that.

Any idea appreciated since I am clueless what would be the best to buy right now.

best regards

Hi @ll,

I just received new Hardware today:

- Asus z270a prime
- some PCIE risers UsB 3.0 with molex connector
- 3x 1060
- already owned 3x 1050 ti
- 2x Corsair cs650m PSU

I already connected 5 cards like this:

PSU1 powering Motherboard and 3x GPU PCIE 6PIN including the 3x riser with molex

PSU2 powering seperatly the other 2x GPU PCIE 6PIN plus the 2x riser with molex

now one molex cable of the corsair PSU has 4 molex connectors. I assume I can power 4 riser in total therefore? nevertheless, I can not connect the 6th card to PSU2 because the wires are simply too short.

I got one of these SATAPOWER<>MOLEX adapter in each package of the riser but I have read somewhere it is not recommended to use them because they can catch fire. What do you guys think?

I also searched for old extensions in my garage but only could find another form of SATAPOWER<>MOLEX. It was an extra of an old enermax or bequite psu, what do you think of these?

Today I successfully f**ked up a PCIE Riser + 1x Slot + 1060.

I am just a beginner in building mining rigs, got some experience in gaming pcs. I already had 3 GPUs mounted directly to the board because my ordered risers take some time shipping. Since I got one 1060 shipped fast I decided to order another riser from eBay to get this 1060 running quicker. eBay Link: https://www.ebay.de/itm/201748846321

I heard about bad soldered risers so I checked the looks for a problem but seemed good.

First thing I noticed was the riser wasn't fitting well. wobbeling inside the port, at first the rig did not boot. It was a little bit tricky for me to figure out what was the problem because simoultaneously I was also waiting for better PSU.

I decided to test using 2x600W PSUs: I powered the riser with molex from PSU that was powering also the motherboard and the second PSU was only for powering the new GPU with 6pin Pcie only.

I switched on 1st PSU, then 2nd, then fired up the rig by powerbutton. no boot. I was curious about that wobbleing riser so I decided to insert it in various ways until it began to boot. everything was working. But every time I needed to reboot or power off the rig the problem with not booting returned.

One time I plugged riser in and out with turned off rig but power on PSU1. PSU2 was disabled. when I pulled the riser from pcie port and stick it in again suddenly the rig started up even though I hadn't touched the powerbutton!

In the end I had to shutdown the rig for another time: I tried several clockings until GPUs crashed. weird thing here was: even when the power limit for gpu0 was set to 100, it only used 30w when mining. when I changed this max power limit, it worked again but other GPUs hashrate went down. So I tried to reboot but again the rig became stucked.

I tried putting the riser into slot in and out several times. it seems that I accidentally plugged the riser into the port wrong sided one last time, after that I smelled burned plastic and switched off everything so the death of riser and gpu is my own fault.

This should be a lesson for me. So what I still need to know for the future: When using 2 Power supply, is it correct to power mainboard + riser with 1st PSU and GPUs with 2nd? Why was my rig not booting/shutting down correctly? was it a powering problem or a riser-fitting problem? Maybe it wasn't booting properly because too many GPUs connected directly instead of using powered riser for all?!

hf roasting my dumb ass

Hey guys,

I'm planning an 8 GPU rig and PSUs are pretty rare/expensive so I thought I try a refurbished server PSU instead. As far as I can see there is J4bberwock sending from EU to germany but he seems to be AFK for some time now.

If anyone can ship a breakout board for IBM 2880W or similar PSUs or maybe a whole package with pico PSU for ATX , cables and adapters for 8 PCIE express cards I am looking forward to buy.

Best regards

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