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Powering 2 GPUs

Kheoh
By Kheoh
in Graphics Cards
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Go to solution Solved by ER1CA,

using 2 dedicated PSU cables is recommended since you may lose a bit of performance. Personally I use 1 psu PCIE cable for 1 card then if I have 2 cards then I use 2 cables. Using the same cable on both cards should make it "work" but you may not get the max performance.

 

Jay has a pretty good video showing it in action:

 

Hope this helps :)

 

BTW I'm not saying it wont work, most likely it will work just fine its just you may loose a few MHZ here and their but since ur PSU sounds good you should be fine

Posted

So I recently built my computer and saw that some builds use 2 cables (rails?) from the PSU to power their graphics cards, and I was worried if my system would need me to do the same? I have a 2070 and a 1060 3GB both on 1 cable. Should I add another cable? P.S., I'm powering the 2 using a 850W power supply if that helps. Thanks.

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you are probably fine. those gpus take around 300-w when on 100% stress i believe. Can you take a pic of your psu? or what psu you have?

QUOTE ME  FOR ANSWER.

 

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Tier lists for building a PC.

 

Motherboard tier list. Tier A for overclocking 5950x. Tier B for overclocking 5900x, Tier C for overclocking 5800X. Tier D for overclocking 5600X. Tier F for 4/6 core Cpus at stock. Tier E avoid.

(Also case airflow matter or if you are using Downcraft air cooler)

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Gpu tier list. Rtx 3000 and RX 6000 not included since not so many reviews. Tier S for Water cooling. Tier A and B for overcloking. Tier C stock and Tier D avoid.

( You can overclock Tier C just fine, but it can get very loud, that is why it is not recommended for overclocking, same with tier D)

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Psu tier List. Tier A for Rtx 3000, Vega and RX 6000. Tier B For anything else. Tier C cheap/IGPU. Tier D and E avoid.

(RTX 3000/ RX 6000 Might run just fine with higher wattage tier B unit, Rtx 3070 runs fine with tier B units)

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Cpu cooler tier list. Tier 1&2 for power hungry Cpus with Overclock. Tier 3&4 for overclocking Ryzen 3,5,7 or lower power Intel Cpus. Tier 5 for overclocking low end Cpus or 4/6 core Ryzen. Tier 6&7 for stock. Tier 8&9 Ryzen stock cooler performance. Do not waste your money!

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Storage tier List. Tier A for Moving files/  OS. Tier B for OS/Games. Tier C for games. Tier D budget Pcs. Tier E if on sale not the worst but not good.

(With a grain of salt, I use tier C for OS myself)

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Ask me anything :)

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  • Solution

using 2 dedicated PSU cables is recommended since you may lose a bit of performance. Personally I use 1 psu PCIE cable for 1 card then if I have 2 cards then I use 2 cables. Using the same cable on both cards should make it "work" but you may not get the max performance.

 

Jay has a pretty good video showing it in action:

 

Hope this helps :)

 

BTW I'm not saying it wont work, most likely it will work just fine its just you may loose a few MHZ here and their but since ur PSU sounds good you should be fine

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I'd definetly use 1 cable for each GPU.

If someone did not use reason to reach their conclusion in the first place, you cannot use reason to convince them otherwise.

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Okay thanks everyone for the help :) I'll add another cable to be on the safe side. Have a nice week

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