Question Super Flower Gold with 12VHPWR ?

[irishmauddib]

Hi all. Been running this rig 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 received the following however:

1. AMD Ryzen 7 5700X3D
2. 16GB Gigabyte GeForce RTX 4070 Ti SUPER Gaming OC Aktiv

Removed old GPU and CPU and put in new CPU and tested the power. System powered on and stayed on.

Installed the GPU with no power. System powered on and stayed on.

Now comes the problem:

The GPU comes with a Power Adapter that converts 2 PCIE power cables from the PCU into a single 12 pin that goes into the GPU.

The moment however that I connect 2 cables into the adapter my system no longer powers up. This is regardless of whether the 12 pin end is connected to the installed GPU or not. If the two PCIE cables are coming out of the PSU but are not plugged into this "adapter" then everything is ok.

So I guess that this means there is only 2 possible issues.

1. The PSU is not capable of this and is detecting the merging cable and is refusing to boot up.
2. The merging cable/adapter itself is faulty.

Does anyone know a quick way to eliminate option 1 here. I am not sure what to read/look for in the specs of my PSU to check if this is an issue.

Thanks all in advance!

 

[JohnBonhamsGhost]

make sure you're not using a daisy-chained PSU cable,
only 2x separate 8pin PCIe cables.

the PSU cannot detect what the cables are going into so therefore cannot just auto-disable power in this type of situation.

it's possible that you have a short in one of the PSU outputs that could be causing something like this though.
try a different output source, there should be 3 labeled "VGA" available. also try the different provided cables.

contact Super Flower support and if they do not have a guaranteed solution,
have them RMA the unit under warranty.

 

[Lutfij]

PSU - Super Flower Leadex III Gold 850W
+
The moment however that I connect 2 cables into the adapter my system no longer powers up.
How old is the PSU in your build?

The PSU is not capable of this and is detecting the merging cable and is refusing to boot up.
+
Does anyone know a quick way to eliminate option 1 here.
In order to clear the PSU you have, of fault, source(borrow, not buy) a reliably built unit at least 850W or power at the entire system's disposal, from your friend or neighbor and see if the issue persist.

Removed old GPU and CPU and put in new CPU and tested the power. System powered on and stayed on.
Did you verify if there were any BIOS updates pending on your motherboard? Speaking of BVIOS, what BIOS version are you currently on?

Installed the GPU with no power. System powered on and stayed on.
I wish you didn't do that at first try. I am concerned if you've fried the GPU with a lack of power to the GPU without the PCIe supplemental power input.

 

[irishmauddib]

I am not daisy chaining, it is two seperate cables for sure.

I am currently going to put the old GPU back in to make sure everything still works with the old one. I will report back.

And yes I installed the most recent BIOS update for my mother boards before I started any of this.

 

[irishmauddib]

The Rig is fairly old. I think all parts aside from the two new ones I received today, are out of warranty. So cant RMA the PSU I am afraid.

Ok I am now posting from the main PC, with the new CPU running fine and the old GPU installed again. So at least I know I did not kill the rig during this install attempt.

The old GPU uses a single "VGA" cable daisy chained into two power ports on the GPU.

My attempt to installed the new GPU was with two "PCIE" power cables instead of the single "VGA" cable. Could it be that I need VGA cables and not PCIE ones or does this generally make no difference?

I did try it in slot 1 and 2 of the PSU. There is a third one. I could try it in slot 1 and 3 to check if slot 2 is the issue somehow.

What strikes me as most strange is everything works fine up until the two PCIE power cables are plugged into the "adapter" that comes with the GPU.

 

[JohnBonhamsGhost]

Could it be that I need VGA cables and not PCIE ones or does this generally make no difference?

you can see that these outputs labeled "VGA" are essentially PCIe.
i imagine just labeled this way for more ignorant users that may not know what exactly they're hooking up.

where are you getting different cables just labeled "PCIe"?
if they did not come with the PSU then that is likely the issue.

 

[triplex1]

The Rig is fairly old. I think all parts aside from the two new ones I received today, are out of warranty. So cant RMA the PSU I am afraid.

Ok I am now posting from the main PC, with the new CPU running fine and the old GPU installed again. So at least I know I did not kill the rig during this install attempt.

The old GPU uses a single "VGA" cable daisy chained into two power ports on the GPU.

My attempt to installed the new GPU was with two "PCIE" power cables instead of the single "VGA" cable. Could it be that I need VGA cables and not PCIE ones or does this generally make no difference?

I did try it in slot 1 and 2 of the PSU. There is a third one. I could try it in slot 1 and 3 to check if slot 2 is the issue somehow.

What strikes me as most strange is everything works fine up until the two PCIE power cables are plugged into the "adapter" that comes with the GPU.

Although it is 850 watts, but you have had it for several years and it worked with the 570 graphics card, the only possibility I say is that you need a new power supply
Not enough current on the card

 

[irishmauddib]

you can see that these outputs labeled "VGA" are essentially PCIe.
i imagine just labeled this way for more ignorant users that may not know what exactly they're hooking up.

where are you getting different cables just labeled "PCIe"?
if they did not come with the PSU then that is likely the issue.

I have three cables that came with the PSU. Two were marked "PCIE" (the 7 pin type at the PSU end) and one was marked "VGA" with two heads at the GPU end daisy chained.

The current GPU uses the VGA cable daisy chained and has worked fine for years.

 

[irishmauddib]

Although it is 850 watts, but you have had it for several years and it worked with the 570 graphics card, the only possibility I say is that you need a new power supply
Not enough current on the card

Perhaps I need a new PSU yea.

The confusing part however is that the issue occurs even if the card is not installed OR connected to the power. The new card can be left out of this entirely.

The issue with the PSU arises simply by linking the 2 PCIE power cables with the "adapter" that came with the GPU.

 

[triplex1]

Perhaps I need a new PSU yea.

The confusing part however is that the issue occurs even if the card is not installed OR connected to the power. The new card can be left out of this entirely.

The issue with the PSU arises simply by linking the 2 PCIE power cables with the "adapter" that came with the GPU.

If you can find another adapter and try, maybe the one who has the card is also to blame.

 

[irishmauddib]

I just ordered a Super Flower Dual 8-Pin to 12VHPWR cable.

Hopefully it arrives quick enough and I can try it out. Should have enough time to return the GPU entirely if it doesnt help.

Been testing out my games with just the CPU upgrade. Some nice enough improvements across the games I tested before and after with.

 

[JohnBonhamsGhost]

cant RMA the PSU I am afraid

it came with a 10 year warranty.

if you've been using it longer than that for your main system it probably would be a good idea to upgrade.

The issue with the PSU arises simply by linking the 2 PCIE power cables with the "adapter" that came with the GPU
...just ordered a Super Flower Dual 8-Pin to 12VHPWR cable

you can still try the single cable that you're currently using with both of it's available heads connected to the adapter.

it may not be able to supply enough power for high usage spikes while being stressed, but it could help narrow down possible issues with the other cables you've tried and/or the adapter itself.

 

[irishmauddib]

Did some meticulous testing today that if anything has left me a bit more confused than before. Did my testing with no GPU at all (old one removed and new one not added).

Current setup: GPU powered with single "VGA" power cable, two heads daisy chained, from "XFX playhard". That came with the PSU.

Test with: New GPU "adapter" and two single head (no daisy) XFX "PCIE" power cables. Also came with the PSU.

First test was:

1. Unplug GPU power and remove old GPU entirely. Leave VGA power connected to PSU. System boots.
2. Plug both heads of the VGA daisy chain into the "adapter". System boots.

Second Test was:

1. Unplug GPU power and remove old GPU entirely. Leave VGA power connected to PSU. System boots.
2. Plug single PCIe cable into PSU. System boots.
3. Attach ONLY that PCIe cable to the "Adapter". System NO BOOT.
4. Remove the adapter again to return to step 2 above. System NO BOOT.
5. Unplug the PCIe cable from PSU to return to step 1 above. System boots.
6. Repeat with second test PCIe cable: Results all same as above.
7. Repeat tests 1-6 again but for the OTHER free VGA power port on the PSU. Results again all same as above.

So I am not sure what this test has proven? I expected steps 1 to 3 were going to go that way. But steps 4 and 5 are something of a surprise. Almost like the PSU "remembers" not to trust that cable until it is removed entirely. Is that normal?

The test does seem to suggest EITHER the "adapter" is faulty or that the power draw is not compatible with the "PCIe" type cable over the "VGA" type cable. The first test appears to suggest the second theory more plausible.

Either way I guess the next step is to wait for the higher quality cable I ordered above. Though I could also go out today and source a good quality "VGA" cable in a local shop.

 

[triplex1]

''next step is to wait for the higher quality cable I ordered above''

Wait.

 

[triplex1]

What cables should I connect on a Gigabyte RTX 4070 TI​

 

[triplex1]

View: https://www.youtube.com/watch?v=p0fW5SLFphU

 

[triplex1]

look at the video I sent you to understand the problem

 

[JohnBonhamsGhost]

two heads daisy chained, from "XFX playhard". That came with the PSU...
two single head (no daisy) XFX "PCIE" power cables. Also came with the PSU.

you have not specified any XFX brand products in the thread,
where have these come from that are added to the mix?

this could be your problem to begin with;
the Super Flower included cables are all labeled, "VGA"
with no "PCIe" labels as you had described:

 

[irishmauddib]

^ Well that is interesting thanks. To be honest I am starting to doubt my own sanity now. I have no recollection of ever buying any cables myself separately before this weekend.

These "XFX playhard" are the only cables I have. So I just assumed they were the cables that came with the PSU. Certainly the VGA one is the only one I have used since I built this PC.

Unless they came with something else I bought when I built this PC such as the 3070 GPU or the Tomahawk Mobo...... I have absolutely no idea where I got them.

But if all that is true then I have NO IDEA where the cables that came with the PSU have all disappeared to. I did not dump them. And I have one high quality box where I place all cables I get. So they have gone walkabout.

So I am totally baffled at this point. But hopefully the cable I bought from the same manufacturer as my PSU will arrive tomorrow or Tuesday and solve all the problems!

 

[irishmauddib]

you have not specified any XFX brand products in the thread,
where have these come from that are added to the mix?

this could be your problem to begin with;
the Super Flower included cables are all labeled, "VGA"
with no "PCIe" labels as you had described:

Unfortunately I can not "Like" your post twice. I was enquiring with my family if they had any idea where my missing cables might be. They had no idea.

I was about to give up when my daughter say the big black wallet in your picture above and said "Hang on I think that went up to the attic by mistake in a box of books a few years ago".

She was indeed right and I am now typing to you on a fully functional rig with a fully functional new GPU! Your eagle eyes spotted the issue. I thank you! So glad I decided to mention the "make" of he cables which I had assumed were the ones from the PSU.

I guess they came with the Mobo or the Ventus 3070 or something.

Thank you thank you. Cant wait to bench mark the games I benchmarked on the old rig last week.

 

[JohnBonhamsGhost]

am now typing to you on a fully functional rig with a fully functional new GPU! Your eagle eyes spotted the issue.
...Unfortunately I can not "Like" your post twice.

you can choose a post as the answer to the thread.
others may find it useful in the future if happen to end up in a similar circumstance.