The question about Super Flower Gold with 12VHPWR remains unchanged.
The question about Super Flower Gold with 12VHPWR remains unchanged.
Hi everyone. This rig has been running for some time now...
GPU - MSI GeForce RTX 3070 Ventus 3X OC
CPU - AMD Ryzen 5 5600X
MOBO - MSI MAG X570 Tomahawk WIFI
RAM - G.Skill RipJaws V 32GB, CL16-19-19-39 (F4-3600C16D-32GVKC)
SSD - Samsung SSD 970 EVO Plus 1TB
PSU - Super Flower Leadex III Gold 850W
.......... I just got these:
AMD Ryzen 7 5700X3D
16GB Gigabyte GeForce RTX 4070 Ti SUPER Gaming OC Aktiv
Swapped out the old GPU and CPU, installed the new one, and tested power. System turned on and stayed on.
Now the issue arises:
The GPU comes with a Power Adapter that changes two PCIE cables into one 12-pin connector for the GPU.
But whenever I connect those two cables into the adapter, the system fails to power up—no matter which end goes into the installed GPU.
If the cables are coming out of the PSU but not plugged into this adapter, everything seems fine.
I suspect there are only two possible causes:
1) The PSU can’t handle the merging and is blocking boot.
2) The adapter itself is defective.
Anyone have a quick way to rule out option 1? I’m not sure what specs to check for confirmation.
Thanks in advance!
you haven't mentioned any XFX brand items in the discussion,
where did these come from that were added to the mix?
this might be the root of the issue;
the Super Flower included cables are all labeled, "VGA"
with no "PCIe" labels as you had described:
do not use a daisy-chained PSU cable, instead use two separate 8pin PCIe cables.
the power supply cannot identify the connected cables, which means it won't auto-disable power in this case.
a short in one of the PSU outputs might be the cause—check for issues there.
consider using a different output source; there should be three labeled "VGA" ports.
also test with the provided cables.
reach out to Super Flower support if they can't help, and request a warranty return if needed.
PSU - Super Flower Leadex III Gold 850W
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When I connect two cables into the adapter, the system fails to start.
How recent is the PSU in your setup?
The PSU isn’t functioning properly and is trying to merge the cables but refusing to boot.
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Is there a simple method to bypass option 1 here?
To fix the PSU, you should replace it with a well-built unit of at least 850W or ensure sufficient power for the whole system. Consider getting one from a friend or neighbor and check if the problem continues.
Removed the old GPU and CPU, installed the new one, and tested power—system turned on and remained active.
Did you check for any pending BIOS updates on your motherboard? Speaking of BIOS, which version are you currently using?
Installed the GPU without power; system still powered on.
I hope you didn’t attempt that initially. I’m worried about damaging the GPU due to insufficient power to it without the PCIe supplemental input.
I'm not connecting them in a chain, it's definitely two separate cables.
Right now I'm putting the old GPU back in to verify everything functions with the previous one. I'll let you know what happens.
Yes, I also installed the latest BIOS update for my motherboards before beginning this process.
The Rig has a decent age. I believe all components except the two new ones I got today are not covered by warranty, so I won’t be able to return the PSU. That means I can’t send it back via RMA.
I’m now posting from the main PC. The new CPU is working properly and the old GPU has been reinstalled again. This shows I didn’t completely destroy the rig during this setup.
The previous GPU uses a single "VGA" cable connected to two power ports on the card.
My effort to install the new GPU used two "PCIE" power cables instead of just one "VGA" cable. Could it be that I should use VGA cables or is this difference not important?
I tried it in slots 1 and 2 of the PSU, but there’s a third slot available. I might test slots 1 and 3 to see if the problem lies with slot 2.
What bothers me most is that everything functions normally until the two PCIE power cables are connected to the adapter that comes with the GPU.
you can observe that these outputs marked as "VGA" are actually PCIe-based.
i think this labeling is meant for simpler users who might not understand exactly what they're connecting.
where do you find cables that simply say "PCIe"?
if they weren't included with the power supply, that's probably the problem.
I possess three cables included with the power supply unit. Two had the "PCIE" label (the seven-pin type on the PSU side) and one was labeled "VGA" with two heads at the graphics card end connected in series. The current graphics card uses the VGA cable daisy chained and has functioned properly for many years.
Maybe I should consider getting a different PSU. The confusing part is that the problem happens even when the card isn't installed or connected to power. The new card can be completely ignored in this case.
The issue with the PSU comes up just by connecting the two PCIe power cables with the "adapter" that came with the GPU.