No.
Using powered riser's like the ribbon riser type and dual PSU will cause a short, as the 2 currents meet when they shouldn't .
you will need the USB looking PCIe risers which work correctly with dual PSU as they are hardwired to accept power only from the molex and not draw from the board. Or ribbon risers with molex which draws power ONLY from the molex.
Again its the power from 2 separate currents meeting at the board.
I have 6 x R9 280X with the USB looking powered risers .
Seasonic 1250W powering 4 cards and PC ..
Corsair 750W power 2 cards
Each PSU powers its own molex on the risers and the corsair is locked in ON mode, via bridged the green and black wire on the 24pin molex.
Again: using ribbon risers with molex cause a shutdown on the system, its been explained before about the 2 PSU current's mixing when they shouldnt. you could blow the board and cards, if this is your problem.
Using powered riser's like the ribbon riser type and dual PSU will cause a short, as the 2 currents meet when they shouldn't .
you will need the USB looking PCIe risers which work correctly with dual PSU as they are hardwired to accept power only from the molex and not draw from the board. Or ribbon risers with molex which draws power ONLY from the molex.
Again its the power from 2 separate currents meeting at the board.
I have 6 x R9 280X with the USB looking powered risers .
Seasonic 1250W powering 4 cards and PC ..
Corsair 750W power 2 cards
Each PSU powers its own molex on the risers and the corsair is locked in ON mode, via bridged the green and black wire on the 24pin molex.
Again: using ribbon risers with molex cause a shutdown on the system, its been explained before about the 2 PSU current's mixing when they shouldnt. you could blow the board and cards, if this is your problem.
This is what I do, and it does work
Also, for my Coolermaster V850 (seasonic) I have it jumpered without the ATX cables attached. So much easier to use without having to jumper the ATX cable.
Can vouch for a potential misunderstanding here. . . the usb risers are great . . but if you hook them to your secondary psu that is powering cards as well . . they will/can still burn out.
Just ran them for about 2 weeks and i've got two dead psu's and 2 burned risers to prove for it.
Lucky, the mobo and gpu cards were fine.
If you keep seeing your gpus temps go to 511c and 0 fan speed . . you're hooked up wrong. Simple as that.
There's multiple configs you can try . . all risers to primary psu .. . all risers to secondary psu . . . or each riser connected to the same psu that the gpu card its connected to .. . . just cycle them until it's not faulting to 511c/0 rpm. When you see that you're shorting current between the psu's and will blow one or both out. It really is different psu to psu. Some platinum cert ones will handle this w/o a problem . . while some bronze cert ones need a diff config. Comes down to what psu you invested in really.
If you doubt this . . then look for what looks like something got spilled on any of the risers/mobo/gpu and you'll know you f'd up. If it still works then keep on. If not then buy a new one and move on.
