I saw this picture while looking at overclocking guides and I wondered if I may have my power setup incorrectly. My GPU is currently connected exactly like the don’t do this diagram.
I could be wrong here, but I think the common interpretation here is wrong. The risk is not that the wires overheat and cause a fire. The risk is that the card draws too much current from a single 12V power rail on your PSU, sustained for a long time, and that burns out the power rail on your PSU.
I have a 6950 XT that I used with a 850W PSU that was connected incorrectly according to the diagram, with multiple connectors coming off a single rail. After about 6 months, one day my SSD stopped working, and after some tinkering, I realized that if I plugged it into a different 12V connector, it started working! I had burned out one of the 12V rails on my power supply, and I strongly suspect it was my incorrect wiring into my 6950 XT that caused it. (edit: I got a new PSU and never looked back)
As long as you’re not overclocking you’ll be fine. If you can share a cable for 2 3 8 pin gpus then why wouldn’t you be able to do the same for 2?
If you’re trying to overclock the snot out of it then you should theoretically get better performance out of two cables.
I don’t know why you are getting downvoted to hell. This is actually correct. They put the second connector on there for a reason. People including myself have done the maths on this before and it’s all above board. Only fringe cases involving power transients, out-of-spec cards, and obviously overclocking should actually make this a problem. Even then the 12VHPWR uses the same current density if not more than a daisy chained 8 pin setup.
The duality of lemmy
The PC community is full of FUD/just straight up ancient information that’s no longer applicable. I’m definitely not perfect, but it doesn’t take a rocket surgeon to figure out a lot of these things if you sit down and double check your info.
Haha mine too! I recently upgraded my gpu so I opened it up and realized I daisy chained it. Lesson learned!
If the GPU has two power inputs, you don’t do the “don’t do” diagram. Period.
Like other commenters have input, there are specific situations where you’re probably fine.
If you have to ask, just fix your wiring to one of the green check configs.
This is literally how house fires start.
Crap I was hoping someone wouldn’t say this. Rewiring its going to be a mission.
