Hi;
I've set up a mining rig for Ethereum with a friend of mine and we are having a problem with the power supplies.
Our rig consists of :
6 x RX570 4GB PowerColor Red Dragon
Mobo Gigabyte H110-D3A
Mem. 4GB VETEKE
SSD Kingston 120GB
CPU - Celeron G3930
6 x Riser cards v006
2 x EVGA 650 GOLD 80+ 100-GD-0650
We managed to get the bios working, alongside with the updated GPU drivers, the mobo supports UEFI, partition GPT, Windows 10
and we are running Claymore Dual-Miner Eth/Dcr.
When we start up the system everything works fine, all the GPUs and the two PSUs are powered, the system runs smooth, no Windows crashes or any other problem, but when we start Claymore the second PSU shuts down along with everything connected, the main PSU works fine.
The secondary PSU is now being jump-started by the paperclip method, but with a standard cable, we tried the adapter, and we tried connecting other cables in the adapter fashion directly on the 24pin cable of the first, whatever we do the problem stays the same.
The problem isn't only when starting Claymore tho, if we open MSI Afterburner and try to modify even the fan on the GPUs that are connected to the secondary power, it shuts down. We tried to underclock the GPUs, we tried biosmod, and we tried stock.
Now we are using only the first PSU with 3 GPUs, it works fine, all of them overclocked and biosmodded, and the same PSU stands the Mobo, the risers and the SSD without a problem and a stable hashrate all day long. We tried swapping the PSUs and both of them work fine when they are the main one.
We tried putting all the risers on the main PSU, we tried not putting risers on a different PSU than their respective GPUs, we tried putting only one riser on the secondary PSU and still shuts down, even with only one card connected to it it shuts down. We tried connecting the SSD to the secondary, it shuts down and crashes the system. We also tried changing the surface where the all the parts are, and it still gives us the same problem even in a wooden table.
If someone had a similar problem using two PSUs on any kind of system, or can share some insight on the matter, we would gladly appreciate it! We are willing to try everything that we could get our hands on, we searched the internet about it for days, we tried everything we could to make this work, feel free to ask more about anything on the setup that could help you enlighten us!
Thank you all for your time!
Edit: The GPUs are being powered by a 8/6+2 pin PCI-e cable. We tried using Sg-miner too, the same thing happens.
post edited by NNogueira - Tuesday, January 30, 2018 3:10 PM