Question Doubt about my PSU entrances

[wandererlost]

Hello.
I got a Superflower Leadex III Gold 750W Modular Gold, (SF-750F14HG). I bought it about 2 years ago.
Behind it there are only two VGA inputs and two CPU inputs.
If I buy an RTX 4080S could I use my VGA inputs on both the VGA input and CPU to supply power?

https://imgur.com/naztw8x

 

[SkyNetRising]

If I buy an RTX 4080S could I use my VGA inputs on both the VGA input and CPU to supply power?

RTX 4080S requires three 8pin (6+2pin) connectors.

Your PSU has two cables, each with two 6+2pin PCIE connectors.
So - four 6+2pin PCIE connectors total. One will be left free.

 

[wandererlost]

RTX 4080S requires three 8pin (6+2pin) connectors.

Your PSU has two cables, each with two 6+2pin PCIE connectors.
So - four 6+2pin PCIE connectors total. One will be left free.

So the name CPU and VGA doesn't matter? Are they the same entries?

 

[--SID--]

Are they the same entries?

No, the pinout is different.

 

[wandererlost]

No, the pinout is different.

So I can't use a 4080S with this PSU? Would I have to buy a new one?

 

[--SID--]

So I can't use a 4080S with this PSU? Would I have to buy a new one?

You can use it. Do what @SkyNetRising suggest

RTX 4080S requires three 8pin (6+2pin) connectors.

Your PSU has two cables, each with two 6+2pin PCIE connectors.
So - four 6+2pin PCIE connectors total. One will be left free.

 

[wandererlost]

You can use it. Do what @SkyNetRising suggest

But won't it cause damage by using only two PSU inputs?

Besides, I would only have to use it with an adapter, right?

 

[SkyNetRising]

But won't it cause damage by using only two PSU inputs?

Do you have all modular cables with your PSU?

Besides, I would only have to use it with an adapter, right?

Yes. You'll have to use adapter - 3x PCIE 8pin to 12VHPWR connector.
It comes bundled with all RTX 4080S.

 

[wandererlost]

Do you have all modular cables with your PSU?

Yes. The VGA cables each have 6+2 pins. There are 2 cables.

 

[--SID--]

But won't it cause damage by using only two PSU inputs?

Those are outputs! Each output is rated for 300w.

Besides, I would only have to use it with an adapter, right?

What do you mean?

Yes. The VGA cables each have 6+2 pins. There are 2 cables.

Each connector is rated for 150w.

 

[wandererlost]

Those are outputs! Each output is rated for 300w.

What do you mean?

Each connector is rated for 150w.

My cables are exactly like these:

I have two cables. Each cable has 2 pcie (2x6). But I was told that two of these are not very reliable as it causes the so-called daisy chain? And that I would always have to use the largest and not the middle part of the cable.
I was also told that this adapter could end up damaging the GPU over time. That is true? The safest thing would be to buy a cable and put it directly into the power supply and put it into the GPU itself, but as my power supply doesn't support it, I wouldn't be able to do that.

And the fact that I only have two VGA inputs on the PSU wouldn't it damage it since it requires 3 inputs and I would have to use 3 PCIe with 2 inputs?

 

[SkyNetRising]

I have two cables. Each cable has 2 pcie (2x6). But I was told that two of these are not very reliable as it causes the so-called daisy chain? And that I would always have to use the largest and not the middle part of the cable.
And the fact that I only have two VGA inputs on the PSU wouldn't it damage it since it requires 3 inputs and I would have to use 3 PCIe with 2 inputs?

You have four PCIE 6+2pin plugs available coming from PSU.
Your graphics card requires three of them.
It's all good.

If you want all three plugs coming from different cables, then you'll have to purchase a new PSU.

I was also told that this adapter could end up damaging the GPU over time. That is true?

There have been problems with 12VHPWR connector on RTX 4090 cards.
If connector is not properly inserted, then it can melt and damage the card.

Make sure, you insert all connectors properly.

 

[wandererlost]

You have four PCIE 6+2pin plugs available coming from PSU.
Your graphics card requires three of them.
It's all good.

If you want all three plugs coming from different cables, then you'll have to purchase a new PSU.

So it's okay to just have two VGA inputs on the PSU? I thought this would damage the PSU. And it would need to have at least 3 inputs to work well. These two VGA PSU outputs support up to how many Watts?

And isn't the shortest part of the cable what they call a daisy chain? Do all parts of the cable deliver power equally? I thought the longer part would have some advantage and safety.