Using an separated PSU for gpu

[Imbroke2021]

Is it safe using an cheap PSU with an Adapter to power up just the GPU? I have ASUS GTX 950 that require 6 pin connectors i buy dual Molex to 6 pin PCIE connector the reason is my PC is an pre built pc from DELL Model name Optiplex 3080 SFF theres no way to use an standard ATX psu when the mobo is litteraly using an proprietary power connector 

[LIGISTX]

26 minutes ago, Imbroke2021 said:

Is it safe using an cheap PSU with an Adapter to power up just the GPU? I have ASUS GTX 950 that require 6 pin connectors i buy dual Molex to 6 pin PCIE connector the reason is my PC is an pre built pc from DELL Model name Optiplex 3080 SFF theres no way to use an standard ATX psu when the mobo is litteraly using an proprietary power connector 

I wouldn't use molex to 6 pin adapters if you can avoid it... If you are going to buy a PSU just to power the GPU, I would get one that at least has a 6 pin.... Most PSU's will have a 6 pin.

 

Does your current PSU not have enough power to power a 950?

 

If you do this, you will need a way to turn on the second PSU at the same time as the first one, and if it uses a proprietary connector its going to be sorta tricky to do that.... They make adapters to turn on 2 standard ATX PSU's at once, but if you have proprietary PSU wiring that obviously will not work

 

Maybe if you google enough around there are folks who have solved this issue for that specific PSU and Model of Dell.

[Yous34]

43 minutes ago, Imbroke2021 said:

proprietary power connector 

There is a solution for every problem my friend, did some googling and there are 24 pin to that dell power connector out there, just get a psu that fits your pc case, with the corect connectors for your gpu, then buy one of theese adaptors, and yes it is safe to power a gpu for an external psu, that's what miners do, but easy solution imo is just get a new psu and the adapter, who know you might wanna upgrade motherboard in the future then you won't have to worry about a psu 

 

[--SID--]

45 minutes ago, 8tg said:

it’s a 90 watt card, the extra 15 watts through the molex connectors is well within spec.

That's not how it works. Below you see specificated measurements. Green is total power draw, blue and purple are PEG connectors and red is power from the PCI-e slot.

 

Source: https://nl.hardware.info/artikel/9247/17/nvidia-geforce-gtx-1650-review-a-round-up-nieuwe-instap-turing-is-goed-voor-het-milieu-minder-voor-de-framerates-testresultaten-stroomverbruik

[Imbroke2021]

1 hour ago, LIGISTX said:

I wouldn't use molex to 6 pin adapters if you can avoid it... If you are going to buy a PSU just to power the GPU, I would get one that at least has a 6 pin.... Most PSU's will have a 6 pin.

 

Does your current PSU not have enough power to power a 950?

 

If you do this, you will need a way to turn on the second PSU at the same time as the first one, and if it uses a proprietary connector its going to be sorta tricky to do that.... They make adapters to turn on 2 standard ATX PSU's at once, but if you have proprietary PSU wiring that obviously will not work

 

Maybe if you google enough around there are folks who have solved this issue for that specific PSU and Model of Dell.

I'm using an old used Cooler master 450 W psu 

[Imbroke2021]

im planning to use dual psu one for the whole system and the second one is just for the GPU 

[Imbroke2021]

1 hour ago, LIGISTX said:

I wouldn't use molex to 6 pin adapters if you can avoid it... If you are going to buy a PSU just to power the GPU, I would get one that at least has a 6 pin.... Most PSU's will have a 6 pin.

 

Does your current PSU not have enough power to power a 950?

 

If you do this, you will need a way to turn on the second PSU at the same time as the first one, and if it uses a proprietary connector its going to be sorta tricky to do that.... They make adapters to turn on 2 standard ATX PSU's at once, but if you have proprietary PSU wiring that obviously will not work

 

Maybe if you google enough around there are folks who have solved this issue for that specific PSU and Model of Dell.

just wondering if it really safe tho because some forum from toms hardware say using dual PSU aren't safe 

[LIGISTX]

6 hours ago, Imbroke2021 said:

just wondering if it really safe tho because some forum from toms hardware say using dual PSU aren't safe 

It’s safe if you do it correctly, but in your situation with a proprietary power connector it will be very hard to get the PSU’s to turn on at the same time which is required.
 

But someone said above they found a converter from normal ATX to your dell power plug. I’d get that adapter so you can just use a single ATX power supply. That is your best bet. 

[Imbroke2021]

11 hours ago, LIGISTX said:

It’s safe if you do it correctly, but in your situation with a proprietary power connector it will be very hard to get the PSU’s to turn on at the same time which is required.
 

But someone said above they found a converter from normal ATX to your dell power plug. I’d get that adapter so you can just use a single ATX power supply. That is your best bet. 

Thank you so much for your help the gpu is working fine on my pre built dell pc