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Corsair RM850 PCIe Question

KingCole
By KingCole
in Power Supplies
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Posted

Hey LTT Forums,

 

I just got a new RM850. I noticed the cables for the PCIe connectors have one end for the PSU and two terminal ends. This is the first I've seen of this and wonder would the one cable be able to provide optimal power to both PSU inputs on my GPU (it's a 8 + 6 pin)?

 

Thanks in advance!

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Yes, a single cable's connectors are fine for a GPU that needs two plugs.

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

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i7 8086k - EVGA Z370 Classified K - G.Skill Trident Z RGB - WD SN750 - Jedi Order Titan Xp - Hyper 212 Black (with RGB Riing flair) - EVGA G3 650W - dual booting Windows 10 and Linux - Black and green theme, Razer brainwashed me.

Draws 400 watts under max load, for reference.

 

How many watts do I need? ATX 3.0 & PCIe 5.0 spec, PSU misconceptions, protections explained, group reg is bad

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3 minutes ago, KingCole said:

I just got a new RM850. I noticed the cables for the PCIe connectors have one end for the PSU and two terminal ends. This is the first I've seen of this and wonder would the one cable be able to provide optimal power to both PSU inputs on my GPU (it's a 8 + 6 pin)?

Yes a single cable would be enough, although if I remember correctly, Nvidia did recommend users to use two cables with the new 3000 series cards.

But I have been running my 2070 Super for almost a year now on a single cable (which also uses an 6+2 pin & 6 pin).

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards work: https://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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It's fine to run the 8+6 off one cable.   I been doing it for years, including my 5700xt

I refuse to read threads whose author does not know how to remove the caps lock! 

— Grumpy old man

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8 hours ago, minibois said:

Nvidia did recommend users to use two cables with the new 3000 series cards.

Yes, they did and for a very good reason..

 

2 hours ago, seon123 said:

The recommendation is generally to use one cable if the GPU TDP is below 225W, and to use more if it's higher. So it depends

 

Yes, that is the general rule. 

i9 9900K @ 5.0 GHz, NH D15, 32 GB DDR4 3200 GSKILL Trident Z RGB, AORUS Z390 MASTER, EVGA RTX 3080 FTW3 Ultra, Samsung 970 EVO Plus 500GB, Samsung 860 EVO 1TB, Samsung 860 EVO 500GB, ASUS ROG Swift PG279Q 27", Steel Series APEX PRO, Logitech Gaming Pro Mouse, CM Master Case 5, Corsair AXI 1600W Titanium. 

 

i7 8086K, AORUS Z370 Gaming 5, 16GB GSKILL RJV DDR4 3200, EVGA 2080TI FTW3 Ultra, Samsung 970 EVO 250GB, (2)SAMSUNG 860 EVO 500 GB, Acer Predator XB1 XB271HU, Corsair HXI 850W.

 

i7 8700K, AORUS Z370 Ultra Gaming, 16GB DDR4 3000, EVGA 1080Ti FTW3 Ultra, Samsung 960 EVO 250GB, Corsair HX 850W.

 

 

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