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RX580 gpu rig riser and dual psu issues
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Topic: RX580 gpu rig riser and dual psu issues (Read 95 times)
dcjim1
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RX580 gpu rig riser and dual psu issues
December 25, 2017, 04:32:05 AM
Last edit: December 25, 2017, 04:42:36 AM by dcjim1
#1
Hi Folks, thanks for maintaining a great site with a wealth of knowledge. I'm still a bit confused after searching around for answers, so I thought I'd post a question here.
I planning to build a RX580 gpu rig, starting out with 6 gpu cards and 1x/16x powered riser boards. The RX580 has 8pin pcie power slot and is rated at 185W by manufacturer. I'm using a modular Corsair 1200W PSU with six 8-pin PCIE sockets and six 6-pin "peripheral & sata" sockets.
1. I ordered risers with 6-pin power connectors. They come with SATA-6pin adapter cable, but as far as I read I should not use those? Is it safer to use a PCIE power splitter cable, and connect the card/riser pair to the same pcie socket on PSU?
2. The cards are rated at 185W but 8-pin PCIE cable delivers 150W, is it safe to split the cable for both the card and riser? Is the riser supposed to deliver an additional 75W thru the PCIE slot on top of the 8-pin power source? In that case, shouldnt I power the riser from a different PSU socket because 8-pin PCIE is rated for 150W ?
Also, any other suggestions/tips on how to split the power among two PSU would be appreciated. Thanks in advance.
dcjim1
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Re: RX580 gpu rig riser and dual psu issues
December 25, 2017, 04:50:32 AM
#2
Another question, if theres enough psu sockets left, can I connect the 6-pin "peripheral & sata" socket directly to the riser's 6-pin power socket ? would that draw enough to satisfy the 75W pcie slot spec? any safety issues?
0xcosmos
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Re: RX580 gpu rig riser and dual psu issues
December 25, 2017, 12:15:05 PM
#3
they are max rated for 185w
when mining they will only consume 90w single mining
and 110w dual mining
using molex is good enough for rx580
and 6pin will obviously be the best
dcjim1
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Re: RX580 gpu rig riser and dual psu issues
December 25, 2017, 04:22:47 PM
#4
Quote from: 0xcosmos on December 25, 2017, 12:15:05 PM
they are max rated for 185w
when mining they will only consume 90w single mining
and 110w dual mining
using molex is good enough for rx580
and 6pin will obviously be the best
Thanks for the response....
Can I expect 90-110w from RX580 under linux ?
How much do I need to undervolt to get to this type of power consumption?
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