Power supply cables

[CroBoy12]

Buying 4x 580, i searched that i need only 8 pin for these cards but im not sure which cables i need to buy. I have power supply Corsair 850rm. http://www.corsair.com/~/media/corsair/product%20photos/psu/rm-series/rm850/large/rm850_dc_side.png I also bought 5 risers (1 more, just in case), so how to connect all this to power supply? Which cables i need to buy? There is no tutorials on internet how to connect 4 graphic cards with risers on power supply.
 Can someone help me?

[philipma1957]

Buying 4x 580, i searched that i need only 8 pin for these cards but im not sure which cables i need to buy. I have power supply Corsair 850rm. http://www.corsair.com/~/media/corsair/product%20photos/psu/rm-series/rm850/large/rm850_dc_side.png I also bought 5 risers (1 more, just in case), so how to connect all this to power supply? Which cables i need to buy? There is no tutorials on internet how to connect 4 graphic cards with risers on power supply.
 Can someone help me?

Need to confirm the rx cards will they have 1x 8 pin jack?

Not 2 jacks.

Link the risers you purchased please.

[floppydisk]

Buying 4x 580, i searched that i need only 8 pin for these cards but im not sure which cables i need to buy. I have power supply Corsair 850rm. http://www.corsair.com/~/media/corsair/product%20photos/psu/rm-series/rm850/large/rm850_dc_side.png I also bought 5 risers (1 more, just in case), so how to connect all this to power supply? Which cables i need to buy? There is no tutorials on internet how to connect 4 graphic cards with risers on power supply.
 Can someone help me?

Hi, GPU on risers would have the following connections

#1 - Power to the riser, commonly SATA interface to Molex port on the riser card, or directly SATA interface to the riser card (unsure which one you have bought)
#2 - Power to the GPU, most GPU requires single 8 pin power, or other combination is 8 pin + 6 pin or 8 pin + 8 pin (dual 8 pin)

RM850 as you pointed, have 5 connection for 8 pin power, 1x for PSU and 4x for PCIE (GPU) - This cables should come with your RM850. If you lost it Corsair is selling it separately as well.

Btw, each 580 GPU draw 185W (4 is 740W) + system power (say 100W) so total is 840W, your PSU is just not enough.

[CroBoy12]

Buying 4x 580, i searched that i need only 8 pin for these cards but im not sure which cables i need to buy. I have power supply Corsair 850rm. http://www.corsair.com/~/media/corsair/product%20photos/psu/rm-series/rm850/large/rm850_dc_side.png I also bought 5 risers (1 more, just in case), so how to connect all this to power supply? Which cables i need to buy? There is no tutorials on internet how to connect 4 graphic cards with risers on power supply.
 Can someone help me?

Need to confirm the rx cards will they have 1x 8 pin jack?

Not 2 jacks.

Link the risers you purchased please.

As i read and ask on other forums they said 1x8pin is enough for rx 580.

Risers i bought:

3x  https://www.aliexpress.com/item/60cm-PCI-E-PCI-Express-Riser-Card-1X-to-16X-USB-3-0-Extender-Graphic-Card/32820722061.html?spm=a2g0s.9042311.0.0.Gk8Ji9
2x  https://www.aliexpress.com/item/2017-NEW-60CM-PCI-Express-PCI-E-1X-to-16X-Riser-Card-Extender-PCIE-Adapter-USB/32821008731.html?spm=a2g0s.9042311.0.0.Gk8Ji9

Yea, i could swear i calculated 850 will be enough... now i check and recommended is 950w :/   Is it possible so i use 850w for 3 cards and another psu for another card? (possible more in future) ? Im thinking ordering motherboard H81 Pro BTC, if this is all ok, it should be good?

[floppydisk]

Buying 4x 580, i searched that i need only 8 pin for these cards but im not sure which cables i need to buy. I have power supply Corsair 850rm. http://www.corsair.com/~/media/corsair/product%20photos/psu/rm-series/rm850/large/rm850_dc_side.png I also bought 5 risers (1 more, just in case), so how to connect all this to power supply? Which cables i need to buy? There is no tutorials on internet how to connect 4 graphic cards with risers on power supply.
 Can someone help me?

Need to confirm the rx cards will they have 1x 8 pin jack?

Not 2 jacks.

Link the risers you purchased please.

As i read and ask on other forums they said 1x8pin is enough for rx 580.

Risers i bought:

3x  https://www.aliexpress.com/item/60cm-PCI-E-PCI-Express-Riser-Card-1X-to-16X-USB-3-0-Extender-Graphic-Card/32820722061.html?spm=a2g0s.9042311.0.0.Gk8Ji9
2x  https://www.aliexpress.com/item/2017-NEW-60CM-PCI-Express-PCI-E-1X-to-16X-Riser-Card-Extender-PCIE-Adapter-USB/32821008731.html?spm=a2g0s.9042311.0.0.Gk8Ji9

Yea, i could swear i calculated 850 will be enough... now i check and recommended is 950w :/   Is it possible so i use 850w for 3 cards and another psu for another card? (possible more in future) ? Im thinking ordering motherboard H81 Pro BTC, if this is all ok, it should be good?

Yeah you can make use combination of more than 1 psu for this. Your risers is fine, just need 5 Sata power connection.