Not enough connectors from PSU

Jaap123 · May 16, 2015

Hey forum.

I've decided to upgrade my GPU today but I found out after the purchase that this GPU requires 2 6-pin PCIe connections while at the moment I only have one 6+2pin PCIe connection. I do however have 4 unused cables coming from my PSU: 2x 4pin peripheral power cable and 2x SATA power cable. Is there any way to utilise these cables via some sort of adapter so I can end up with another 6 (or 6+2) pin connection? I need a 2nd 6 (or 6+2) pin connection or my GPU won't work (GTX 970).
Maybe some kind of cable splitter or maybe even opening up my PSU to somehow connect another cable to it?

I'm sorry if I come off as a total idiot here, I don't know much about the subject.

Thanks.

Best Regards,
Jaap.

alexoiu · May 16, 2015

Hi, What graphics card and what power supply using?

Jaap123 · May 16, 2015

I'm currently using a GTS 450 (soon to be replaced by a GTX 970) and the PSU is an ATX ms-n750-val (750W). If it'd help I could take a picture of it.

alexoiu · May 16, 2015

You can try using a molex to 6 pin adapter http://cdn.overclock.net/0/07/350x700px-LL-0745b715_3.jpeg
But I recommend using a power supply with the right amount of PCIe cables.

Jaap123 · May 16, 2015

I'll get to buying a new PSU asap, will the adapter you mentioned suffice in the meantime? Will it keep my new GPU running without harming it?

bignastyid · May 16, 2015

That is an extremely poor quality generic power supply. You should seriously consider replacing it with a better unit. With a psu like that every time you run the system you are rolling the dice on if it blows up or not. And when cheap psus blow they have the ability fry everything attached to them. Depending on the rest of the system specs a decent 550w psu should be enough for a single 970.

alexoiu · May 16, 2015

It depends on the power supply quality. Unfortunately, I don't have too much info about it.

Jaap123 · May 16, 2015

Do you have any reccomendations for a budget PSU which'll suffice?

daniel_blacke · May 16, 2015

Wow this Rosewell Capstone for 39.99:

https://pcpartpicker.com/part/rosewill-power-supply-capstone550

John Chesterfield · May 16, 2015

Are you in Holland Jaap? This is the best I could find after a quick look..

http://www.computerstore.nl/product/324380/category-202961/xfx-pro-550w.html

Jaap123 · May 17, 2015

Thank you all so much for the suggestions and yes I am in holland

So it will take some days for me to get the new PSU while I can pick up a molex to 6 pin adapter in an hour or 2. I'm of course really eager to use my new GPU, so will it be safe to use one of these adapters with my old (and shifty) PSU? Or is it better to just leave the new GPU out 'till I've got my new PSU?

bignastyid · May 17, 2015

Are you a gambling man? It may power it, it may blowup it may power it for awhile then blowup. If you want to gamble that's your choice. The 550w XFX John linked to is a good unit.

Vic 40 · May 17, 2015

This one should already be enough and most of these stores have it in stock so why use an adapter?
http://tweakers.net/pricewatch/349126/cooler-master-gm-g550m.html
or
http://tweakers.net/pricewatch/360226/seasonic-m12ii-evo-520w.html
In enough of these stores can you pick up as well.Depends on which city of course.

Jaap123 · May 18, 2015

bignastyid :

What do you mean blowup? Isn't the PSU either gonna make the GPU work or that the GPU doesn't turn on at all? Do PSU's have the capability to fry everything connected to them?

daniel_blacke · May 18, 2015

Jaap123 :

Yes!

bignastyid · May 18, 2015

Jaap123 :

Low quality PSUs tend to skimp on the protection circuits and have voltage regulation and ripple issues that can damage other components.

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