That depends on your powersupply.
Some PSU has a dedicated 12v Rail for the GPU Power connectors allocated with 80% of the max power of the unit, leaving about 100-150W for other components.
If your PSU is one of those, that might be the reason.
Better wait for those EVGA 1000W PSU.
Topic: What to do with these two power supplies? (Read 187 times)
If you have enough molex/sata connectors, you can use a molex to 8pin adapter/converter to each rail.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
I did order a sata 6 pin to PCIE dual 6+6/2 pin cable (my cards take both 6 and 8 pin connectors to run)
Once I had the cable plugged in to the SATA port on the PSU and tried to power on the mining rig, that power supply and anything I had connected to it would turn on for 1/2 a second and then immediately shut off
one sata cable power is not enough to run，only can startup，not mining！！
If you have enough molex/sata connectors, you can use a molex to 8pin adapter/converter to each rail.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
I did order a sata 6 pin to PCIE dual 6+6/2 pin cable (my cards take both 6 and 8 pin connectors to run)
Once I had the cable plugged in to the SATA port on the PSU and tried to power on the mining rig, that power supply and anything I had connected to it would turn on for 1/2 a second and then immediately shut off
If you have enough molex/sata connectors, you can use a molex to 8pin adapter/converter to each rail.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit of an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
Make sure to use only one rail per GPU and a good quality adapter.
However four (4) 185W GPU is a bit of an overload for a 750W PSU.
You can go for 3 RX580 for each PSU.
You can run more than 1 psu on the same system, use an Adaptor splitter Cable Connector
so you can use both psu.
so you can use both psu.
I have both power supplies running on one system right now
You can split as long as it is one riser and one card per pcie cable
Are you sure about that??
There are only two 8 pin slots on each power supply. I would have to run two 8 pin Y adapters to get four GPU's per power supply.
You can split as long as it is one riser and one card per pcie cable
You can run more than 1 psu on the same system, use an Adaptor splitter Cable Connector
so you can use both psu.
so you can use both psu.
So I built up my first mining rig and didn't research thoroughly enough. I bought two Corsair 750w power supplies for $80 bucks each. They only have two 8 pin slots each to connect to GPU's and if I were to run a Y splitter i'd be afraid of a fire. So right now I can only run 4 AMD RX 580s. I ordered two EVGA 1000w power supplies which will be here on the 14th. I have 7 GPU's total and my motherboard will support 8.
Any ideas what I should do with these two Corsair units? Are there any ultra cheap motherboards that are actually available that'll support 4 GPU's? I could build a 2nd rig smaller rig that only runs 4 cards.
Any ideas what I should do with these two Corsair units? Are there any ultra cheap motherboards that are actually available that'll support 4 GPU's? I could build a 2nd rig smaller rig that only runs 4 cards.
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