Powering 6+8 or 8+8 cards with server PSUs

[Bimmber]

Guys,

Need some help regarding power. 1080ti cards require 6+8 or 8+8 connectors, 6 cards in total. But breakout boards only come with 6 pin connectors?

Also, how much power is consumed by PCI riser?

https://sc01.alicdn.com/kf/HTB1PpYpSFXXXXcIXFXXq6xXFXXXc/202543244/HTB1PpYpSFXXXXcIXFXXq6xXFXXXc.jpg

[VyprBTC]

adapters.

[Bimmber]

6 pin  to 6+2 ?

https://www.parallelminer.com/product/24-inch-16awg-6-pin-male-to-8-pin-62-male-pcie-power-cable/

How do I power risers? Separate cable to each from breakout board? Or can I power 3 risers from one breakout board port?

[puwaha]

You can get cables that start as 6 pin to connect to the breakout board, and then end in 6+2 pin.. just like the link you posted.

You can power the risers with one of these cables if you have enough spots on your breakout board, or get some splitters and power 2-3 on each 6 pin from the breakout board.

[Bimmber]

Riser +gpu need 3 cables. Cards takes 200-220w, riser 0-40w? In total max 260w, but two 6 pin cables can do 300w. Could I do with just 2 cables?

Cable 1 - 6 to 8 pin - breakout board to gpu ?
Cable 2 - 6 to two 6 pin Y cable - from breakout board to gpu & riser.

[philipma1957]

Riser +gpu need 3 cables. Cards takes 200-220w, riser 0-40w? In total max 260w, but two 6 pin cables can do 300w. Could I do with just 2 cables?

Cable 1 - 6 to 8 pin - breakout board to gpu ?
Cable 2 - 6 to two 6 pin Y cable - from breakout board to gpu & riser.

if they are quality cables  and you set tdp to 190 watts or 76%  yes it should be good

[Bimmber]

Thank you, then problem solved!

parallelminer.com seeem to have quality cables.