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Topic: Do the Molex Powered Risers need to come from same 12v rail as MOBO? (Read 805 times)

member
Activity: 98
Merit: 10
Also, how much power is drawn through the powered risers?

 Smiley

Powered risers molex draw max of 75 watt which is the same as if you use 16x PCI-e riser without molex.

Thank you.

Do the powered risers have to come from the same 12v rail as the motherboard?

They should because of voltage difference between both psus. From experience I would say that best idea is to power risers from one psu, even though with some psus it works other way without problems.
hero member
Activity: 1246
Merit: 501
This question is unanswerable - it depends on the PSU.
full member
Activity: 196
Merit: 100
Also, how much power is drawn through the powered risers?

 Smiley

Powered risers molex draw max of 75 watt which is the same as if you use 16x PCI-e riser without molex.

Thank you.

Do the powered risers have to come from the same 12v rail as the motherboard?
legendary
Activity: 1750
Merit: 1009
Also, how much power is drawn through the powered risers?

 Smiley

Powered risers molex draw max of 75 watt which is the same as if you use 16x PCI-e riser without molex.
full member
Activity: 196
Merit: 100
Also, how much power is drawn through the powered risers?

 Smiley
full member
Activity: 196
Merit: 100
As above really.

Have a Dell 1440w server PSU nearly ready to go, but need to know if I need to use the 'MOBO' PSU to power the risers?

Thanks
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