fyi, asrock h81 btc pro doesnt work with 2 psu (another problem miner argh)
Can you explain this in details, I am going to use one server PSU for cards and one PC PSU for H81 BTC Pro just bought. Any issues?
I fail to see how the type or brand of mother board can matter when using 2 psu, I have asrock z87 mboard and use
https://www.pccasegear.com/products/24241/phobya-24pin-2-way-psu-starting-cable this cable to start both psu. I have 5 gpu 1000w + 850w psu, the 1000w runs the mboard + accessories and 3 gpu and powered risers, the 850w runs 2 gpu and their powered risers.
Thats how you fry risers. If two psu-s have different voltage at any time, they get shorted and luckily the riser is the weakest link. If u power only pci-e power connectors with second psu, there will be no short as those "+" contacts are not connected directly to mb.
So right way would be,
secondary: power all cards that it can handle only thru pcie power connectors and nothing more.
primary: everything else, mb, drives, all risers, leftover cards power.
interresting, according to this plan its the opposite?
from this
http://omg-it.works/building-an-ethereum-mining-rig/quote "If you do not follow this wiring scheme you risk shorts or unbalanced power distribution, leading to overload and/or bad power efficiency."
i do have powered usb 3 riser with molex connected to sata power
i also connected the 2 molex on the mainboard with one adapter connected to one molex which is the same line that goes to one gpu on 1st psu
that maybe no good idea ^^
ive tried to connect it to the 2nd psu, as soon as i start the 2nd psu the cpu and gpu fans will turn on, at first i though the pc booted, i guess it didnt only the vents got power, i did not try to start up the pc with this config, too worried
i could try the h81 with your setup above.
fyi, asrock h81 btc pro doesnt work with 2 psu (another problem miner argh)
Can you explain this in details, I am going to use one server PSU for cards and one PC PSU for H81 BTC Pro just bought. Any issues?
I fail to see how the type or brand of mother board can matter when using 2 psu, I have asrock z87 mboard and use
https://www.pccasegear.com/products/24241/phobya-24pin-2-way-psu-starting-cable this cable to start both psu. I have 5 gpu 1000w + 850w psu, the 1000w runs the mboard + accessories and 3 gpu and powered risers, the 850w runs 2 gpu and their powered risers.
ASrock H81 BTC is a well known board for mining for many years - very good reviews and it just works.
2 x PSUs powering 5,6 or 7 GPUs is not an issue with the board.
Like what merc84 said above, you need to get the adapter to get both PSU powered on at same time, as if it's one single big PSU.
Then you need to allocated how many GPUs per PSU in the right order.
Many many good videos out there -
https://www.youtube.com/watch?v=t3iup26oUN4 /
https://www.youtube.com/watch?v=xZiWciJLK3oyes ive read about that that solution, i guess that would be that best way to go..
http://www.add2psu.com/ add2psu is the only solution for this? ive seen it on another site and didnt investigate further...
and yeah im sorry that i kicked this offtopic with one wrong sentence xD