Risers experts : help me powering up my 8 RX 570 rig

[totti10it]

i’m planning to have a rig with 8 AMD rx 570
with 2 psu eVGA gold 750w
the problem here with risers
I’m really confused and need advice about the best riser type can bear heavy power withdraw
most people say the SATA type is the worst and the SATA socket melts and get burn
they say the ver008 is better also ver 009 with 6 pin
but the strange things is
even 6 pin risers have SATA socket on the other end which connects to the PSU rail
and the SATA to MOLEX riser also has SATA socket from the end connecting to the riser
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I’m really confused
if the SATA socket is weak so How it’s present in 6 pin risers?
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[Vann]

Powered USB risers use ~45-50W each. A SATA connector is rated for 54W, which is near the limit and a concern because of the constant draw at near the limit on the connector from a mining rig. That being said, many like BBT advocate the Sata to 6-pin connector included with risers is a heavy duty connector that can handle the load without a problem. To be safe, I use dual sata to 6-pin adapters that spread the load over two connectors instead of one.

https://www.aliexpress.com/item/Deconn-SATA-15-Pin-Male-to-PCI-Express-6-Pin-Dual-Video-Card-Adapter-Cable/32584991290.html

There are also dual molex to 6-pin connectors.

https://www.aliexpress.com/item/4Pcs-High-Quality-2-x-Molex-To-PCI-E-Power-Adapter-4Pin-4-Pin-6-Pin/32759205876.html

I use 6-pin PCI-E risers. Three thicker wires that are designed to spread a higher 12V load instead of two used by molex and sata connectors. The 6-pin risers also use four capacitors for a more stable current flow compared to the three used by the molex and sata risers. The good ones also come with a voltage regulator to prevent spikes.

Just remember to never power more than two risers per SATA or 4-pin Molex PSU cable MAX. Using more more than that, you are overloading the rail and can damage the PSU, cables, connectors or all of them.

[puwaha]

You don't have to use the adapter on the 6 pin risers.  You just plug the 6 pin power cable from the PSU directly into the riser.  The adapters are only included as a convenience.

[totti10it]

You don't have to use the adapter on the 6 pin risers.  You just plug the 6 pin power cable from the PSU directly into the riser.  The adapters are only included as a convenience.

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good point
so how many 6 pin connectors you think still left for the risers
after connecting all the GPU's ??
and cab I use some kind of splitters or it 'll cause overload ??
I really terrified of  burning and melting of cables I don't want to lose my rig

[totti10it]

Powered USB risers use ~45-50W each. A SATA connector is rated for 54W, which is near the limit and a concern because of the constant draw at near the limit on the connector from a mining rig. That being said, many like BBT advocate the Sata to 6-pin connector included with risers is a heavy duty connector that can handle the load without a problem. To be safe, I use dual sata to 6-pin adapters that spread the load over two connectors instead of one.

https://www.aliexpress.com/item/Deconn-SATA-15-Pin-Male-to-PCI-Express-6-Pin-Dual-Video-Card-Adapter-Cable/32584991290.html

There are also dual molex to 6-pin connectors.

https://www.aliexpress.com/item/4Pcs-High-Quality-2-x-Molex-To-PCI-E-Power-Adapter-4Pin-4-Pin-6-Pin/32759205876.html

I use 6-pin PCI-E risers. Three thicker wires that are designed to spread a higher 12V load instead of two used by molex and sata connectors. The 6-pin risers also use four capacitors for a more stable current flow compared to the three used by the molex and sata risers. The good ones also come with a voltage regulator to prevent spikes.

Just remember to never power more than two risers per SATA or 4-pin Molex PSU cable MAX. Using more more than that, you are overloading the rail and can damage the PSU, cables, connectors or all of them.

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thank you

but what about the opposite SATA socket  on the PSU rail
is it also a heavy duty socket and can handle the load ??

[Vann]

Moduar PSU's have an 8-pin connector. As long as you don't overload the rail by connecting no more than 2 risers to the same PSU Sata strand MAX, there is no problem. If you have extra 8-pin VGA connectors on your PSU, you can use a 8-pin PCI-E to dual 6+2 splitter cable to power two 6-pin risers per PSU PCI-E cable.

https://www.aliexpress.com/item/20CM-Black-Sleeved-8-Pin-PCI-E-GPU-to-Dual-8-6-2-Pin-Splitter-PC/32688175733.html

[totti10it]

thanx
what about powering the  M.2 TO PCI-E .

power cable & socket seems very weak specially from the adaptor's end.

is it safe to plug in an RX570
and which is safer the molex cable or the sata?
on long term use??