How to connect 2 CPU and 3 GPU cables

bwihringe15ca02e3

New member
Joined
Oct 28, 2025
Messages
1
Appreciate some clarity/guidance as Im struggling to find a clear answer. Basically how do I connect to a GPU which requires 3 PCIe connectors and Im also using both CPU connections? I have PSU: MSI MAG A850GL PCIE5 850 W. There are only 4 CPU & PCI-E connections. Im one short. See below. MSI seems to claim they can. I just don't how to connect. FYI: GPU is RX9070XT
1761687009399.png

1761687160455.png
 
use 2 cables from the PCIe 16pin, and one of the PCI-E cables.
I’m new to PC building and need some guidance. I’m using a similar setup with a Sapphire Nitro+ RX 7900 XT, which requires three 8-pin connectors. However, my MSI MAG A850GL power supply only has two 8-pin PCIe cables. I still need one more connector for the GPU, but there are no additional PCIe cables and ports available on the PSU. Could you explain what I should do?
 
I’m new to PC building and need some guidance. I’m using a similar setup with a Sapphire Nitro+ RX 7900 XT, which requires three 8-pin connectors. However, my MSI MAG A850GL power supply only has two 8-pin PCIe cables. I still need one more connector for the GPU, but there are no additional PCIe cables and ports available on the PSU. Could you explain what I should do?
Did your GPU not come with a 12v-2x6 adapter? You can use that for 2 and then one from a "normal" 8-pin PCI-E connector.
 
Back
Top