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Question Be quiet power supply for 9070 xt

N

NS99

Member
Hey guys, I was just looking at my power supply as I'm possibly looking to upgrade to the 9070 xt.
I have 7900 xt , that has 2 PCIE power slot where as the 9070 xt has 3.
My power supply is the be quiet pure 12m 850w, Now I believe that has 3 PCIE slot, currently 2 running to the GPU and one going somewhere else lol , I'd have to open the PC up to track down where its going.
My question is looking at my be quiet 12m 850w power supply I'm not even sure it has enough connectors to power a 3 slot PCIE GPU. Does anyone no off hand if this power supply can power a 9070 xt and how to make it work. Thanks

edit, One other question, My PCIE cable's going to the GPU each have 2 connectors on them, Can one Cable be connected to 2 slots in the 9070 xt or will that be to much for it, and then the over cable would just be connected to 1 slot on the 9070 xt, will that work if it makes sense lol .
 
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NS99 said:
edit, One other question, My PCIE cable's going to the GPU each have 2 connectors on them, Can one Cable be connected to 2 slots in the 9070 xt or will that be to much for it, and then the over cable would just be connected to 1 slot on the 9070 xt, will that work if it makes sense lol .
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That should be absolutely fine. Lots of 9070xt are made with just the two connectors anyway, you'll be fine daisy chaining two of them.
 
Should it work, yes. Would I reuse an 850W PSU to power a 300W, $700 video card? I'd prefer to demote and reuse it in a different, less power hungry system and get a new ~1000W PSU.

This within the context that I maintain multiple systems that receive hand-me-down upgrades from other systems I upgraded, within reason... or for a main use rig, or really at least one at a minimum, I keep at least one spare PSU around that could be swapped into any system if that system had a PSU failure. I may be OCD about minimizing system downtime, at least for the systems I use regularly.
 
If this is your PSU: *can't post the link due to the trash forum software* then it's fine. It was only released in 2023, is ATX 3.1 compliant which means it can handle transient spikes up to 1700 watts and has 10 years warranty.

be quiet uses a propriertary connector on the psu side which can confuse people. Your connector is not the typical Y-connector, it has 6 12V power lines and 6 mass like two dedicated 8 pin cables. The only thing missing are 4 sense pins which apparently are not required.

Also, your PSU is multi rail, so even if you only use two 8 pin connectors on your GPU I would recommend to use both of your PCIe connectors on the PSU side (it looks shit with the dangling connector but otherwise it's fine).

In case of your 9070XT with 3 8 pin connectors you take 1 cable from rail 1 (40A) and connect both cable ends to your GPU and then use a 2nd cable from the 2nd rail (36A) and connect one of the two cable ends to the gpu, leaving ther other dangling (or getting CP-6610 if you don't like the looks).
 
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