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Powering 2 GPUs

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

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?

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I'm using an EVGA 850GQ

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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.

PSU Tier List          AMD Motherboard Tier List          SSD Tier List          How to choose a Monitor          My Samsung Odyssey G7 Review

 

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CPU: AMD Ryzen 5 5600X @4.7GHz all-core OC (1.3125V) - Motherboard: Gigabyte B550 Aorus Pro V1 - GPU: PNY RTX 3080 XLR8 Epic-X @2.1GHz Core / 10GHz VRAM - RAM: 16GB G.Skill TridentZ RGB + 16GB Crucial Ballistix - PSU: Corsair RMx 850W - Storage: 500 GB Corsair MP600 (System) + 2 TB Sabrent Rocket Q (Storage) - Cooling: EK & Alphacool custom loop - Case: Lian-Li PC O11 Dynamic - Fans: 6x Noctua NF-A12x25 - AMP/DAC: FiiO K5 Pro - Fan Controller: Corsair Commander Pro - OS: Windows 10 Pro - Monitors: 2x LG 27GN850-B HDR-Gaming-TV: LG C9 OLED 55" - Mouse: Logitech G Pro wireless + Powerplay - Keyboard: Logitech G910 Orion Spectrum, Corsair K63 Wireless + Lapboard - Headphones: Beyerdynamic DT990 Edition 600 Ohm - Microphone: Antlion ModMic

 

Temperatures: (Furmark CPU-Burner and GPU-Burner running at the same time. Measured after water temperature hits equilibrium.)

CPU: 70°C

GPU: 52°C

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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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