Asrock btc motherboard and 6 riser

Mining
1

i install the 6 pci riser i power the motherboard from 2 psu

yesterday hashing good for half a day
today
nothing crashing every 10 minutes

what is wrong
i have windows 10 64 bit and Claymore v6.0
any option how i can fix that?

2

card is 6 asus 470 4gb

3

what risers are you using and also did you plug in the extra molex power on the board (not needed for powered risers) ?

4

You have hardware problem. Its always hard to connect 2 psus and work stable for long time. Check risers. Connect only one card. If work stable add another one.

Regards

5

http://www.ebay.co.uk/itm/5Pcs-USB3-0-PCI-E-Express-1x-To-16x-Extender-Riser-Card-Adapter-SATA-Power-Cable-/142161974954?hash=item21198396aa:g:iTsAAOSwTZ1Xmxv~

what mean not needed for powered risers?

6

The usb only sends data so no need to add the extra molex connector with these.

7

ok i try to power cards only from pci express to see if work
to ised 1 or 2 psu?

8

As long as you don’t mix the power it’s fine to use 2

2 Likes
9

you mean i must use 1000 watt and 1000 watt not 1000w and 500 watt psu?

10

no I mean only power some GPUs 8pin power from the second PSU … nothing else

11

ok i will try and let you know

1 Like
12

use usb powered risers, also every card must be powered from same psu , do no mix the power supply will lead to troubles

2 Likes
13

I can second that – my rig kept crashing or behaving weird as long as it was powered by 2 PSUs. Now that I got one big PSU for the whole rig everything is rock stable.
I did not follow the advice on mixed power supplies very rigidly though (because I did not know about them back then), so maybe that makes a difference…

14

Do you have a link for the guide on using 2 power supplies?

Edit: I also cannot add a 4th 7950 gpu without my machine shutting off. 3 Cards runs great.

h81 pro btc
4 sapphire 7950’s
1 850w PSU on 2 cards, 1 650w PSU to mobo and 1 card. :cold_sweat:

15

it’s quite simple … use same power supply to power card and risers …do not mix … and you will be fine. Do not power a card with a supply and use a different supply to power the riser.

16

Oh shit! I have to undo everything! I literally have power supply for all risers and mixing gpus per psu.

Edit: I even have some dual 6 pin cards with 6 pin from 1 psu and 6 pin from 2nd psu…

17

never power a card from 2 power supplyes