can i use two 6 pin to 6+2 pin pcie cables for a gtx 1080 ti

yaymanplaysgames · Jan 13, 2018

can i use two 6 pin to 6+2 pin pcie cables for a gtx 1080 ti? i have a 1500 watt power supply but it only has 6 pin ports on it so im not sure what cables to get.

13thmonkey · Jan 13, 2018

You don't 'get cables' you use the cables that came with it, and it would have had many 6+2pin PCI-E cables, probably 6 or 8. Cables are not interchangable from PSU to PSU, you need the ones that came with it, or a replacement set for those, I think in the last 2 weeks we've had 2 people on here wondering what's happened when they used cables that 'fitted' but were not the right ones (dead PSU BTW)

boju · Jan 13, 2018

No you need the extra two ground wires from the psu so the gpu knows to draw the extra current from the psu.

What psu is it? Bit odd for a 1500w psu not to have atleast a couple 8 pin pcie ports

yaymanplaysgames · Jan 13, 2018

13thmonkey :

ah [shucks]... its because when i sold my gtx 980s i also gave the guy the cables... this is a problem to say the least isnt it?

watch the language MOD

yaymanplaysgames · Jan 13, 2018

boju :

yeah... as i said to the other guy i was an idiot and gave the cables to another guy while i was selling my old cards (3 gtx 980s) so i had assumed i could just get new cables... should i try to get them back or...

boju · Jan 13, 2018

yaymanplaysgames :

So your psu is adequate and has 8pin ports? Your post confused me with 'it' thought you were referring to your psu being in the same sentence.

I'd leave it alone it's too late now but you could ask, he might have a spare couple 8 to 8 pin pcie cables. Or order online from newegg/amazon or run down to your local pc store if its not late in the evening there for you.

yaymanplaysgames · Jan 13, 2018

boju :

no no my psu has six 6 pin ports but my graphics card (a gtx 1080 ti) has two 8 pin ports. so is it possible to use two 6 to 6+2 pin cables to power the 1080 ti? will i need to get the original cables back or could i order any of them online because the guy above you said you NEED to use the original cables.

jaslion · Jan 13, 2018

yaymanplaysgames :

boju :

no no my psu has six 6 pin ports but my graphics card (a gtx 1080 ti) has two 8 pin ports. so is it possible to use two 6 to 6+2 pin cables to power the 1080 ti? will i need to get the original cables back or could i order any of them online because the guy above you said you NEED to use the original cables.

You cannot use adaptor cables for that. You need to get the original cables or a replacement set (specific for your psu as even if it's the same connection it can still be a problem if it's a cable for another psu).

boju · Jan 13, 2018

I never knew modular pcie cables aren't supposed to be interchangeable being the design could be different. Needing to buy the exact type for your psu if the cables went missing or sold off. If the psu is discontinued how do you go about finding the same cable, or know the specification to buy aftermarket? Being a Sunday can't believe what i just read but its all true so thanks for that, learn something new everyday.

Still the matter of the ops psu only having 6 pin outs? His 980ti's would have had 6 + 8 pins so hes been using this config with two 980ti's. It doesn't sit right with me. But if it works it works, not sure if it's doing any damage to either psu/gpu in long term, assume it would.

Whats the psu yaymanplaysgames? If you couldn't get the cables back,( i mean the guy who bought your cards would be silly to use the cables you gave him right? God bless him), would need specifications of your psu to find cables for, if it's possible.

yaymanplaysgames · Jan 13, 2018

boju :

ok so i am not quite sure what the psu is. every review just says it is a "custom alienware psu" oh shit wait yeah i didnt mention that either. so yeah this pc was an old alienware area 51 r2 with the 3 gtx 980s in it. BUT i found this ebay listing with my exact power supply. i still cant find where the power cables could be bought though. once again i will ask the guy to give my cables back but i seriously doubt that will work. https://www.ebay.com/i/352251908175?rt=nc

boju · Jan 13, 2018

Sorry thought i read 980ti. 980 has 2 6pins.

Sorry to say, you need a new psu with 8pin pcie outs

yaymanplaysgames · Jan 13, 2018

boju :

Yeah but the pcie cables that came with the psu were 6+2 cables though? so if i used those would it work?

boju · Jan 13, 2018

Hmm well if the 6 to 8 pin pcie cables came with the psu it must be ok then. I would ask dell support to be 100% sure, so they are liable if something happens.

yaymanplaysgames · Jan 13, 2018

boju :

yeah idk where to ask them tho they dont have ay proper support things most just lead to dead ends or ''your warranty expired'' tabs so idk

DSzymborski · Jan 13, 2018

yaymanplaysgames :

You're going to have to physically call them or physically email them. You're probably not going to find a standard canned response on the site for people who give away their power supply cables.

I'd probably just buy a new PSU. It's one thing using an adapter when you're running a 1030 or something, but for a GPU that runs over $700 at the times you can even physically find one, I'd shell out $80-$100 on a quality PSU and consider it a lesson learned if the cables can't be directly replaced.

13thmonkey · Jan 14, 2018

There are people that sell kits of modular cables, mostly for aesthetic reasons, but if you can find the model number you are ok.

BOJU, it is 100% true that modular kits are different based on the model of the PSU, there is no correspondence between a 6pin socket on the PSU and the number of cables that it end up in. Please understand this for the future, sorry to call you out in public like this but it is possible that someone would not understand this reading it in a few years time having found it through google. So to be clear, only ever use cables that have been built for the specific model of PSU.

jaslion · Jan 14, 2018

boju :

Best to mention it in your earlier response in caps that that was not the right answer to prevent people that find this post from frying their pc

. Just do an edit and say update that you were wrong or something.

jaslion · Jan 14, 2018

yaymanplaysgames :

If you get the original cables back then sure it will work otherwise a good 650w or up (depends on the rest of the system) psu is going to be more than enough.

13thmonkey · Jan 14, 2018

somewhere like this: https://www.moddiy.com/categories/Cables/PSU-Cables/Premium-Custom-Single-Sleeved-Modular-Cables-Set/ there are others, should be able to help once you understand what the PSU is.

boju · Jan 14, 2018

I haven't suggested pcie cables to anyone so lucky.

13thmonkey, i get theres no correspondence between 6 to 8 pin pcie, thats why i was amazed Dell would allow an 8pin to exist on the exit of an 6pin. Instead of further correcting me which i already happily said 'i have learnt something' why don't you help the op instead. Same to you jaslion.

13thmonkey · Jan 14, 2018

I already have helped by suggesting kits of custom cables.

And what i'm suggesting is that there is no correspondence between the number of pins at the PSU socket, and the number of pins at the end of the cable. Providing the socket can carry the current more than one cable can come from a pin in a socket.

boju · Jan 14, 2018

Yeah I saw you were helping after i said that sorry.

Dell have seemed to design their model psu to deliver the extra grnd wires via 6pin but its not always like this. People who might see this without reading the whole story will think its ok to use adapters. No its not.

yaymanplaysgames · Jan 14, 2018

13thmonkey :

ok so i essentially either need to get my original cables back or get them customized from this website you provided? because i cant seem to find a 6 pin to 6+2 cable anywhere on the site... could you possibly link it to me? thanks.

13thmonkey · Jan 14, 2018

yaymanplaysgames :

There are other sites, you are looking for pci-e cables, but you need your effective make and model number from dell.

yaymanplaysgames · Jan 14, 2018

13thmonkey :

yaymanplaysgames :

There are other sites, you are looking for pci-e cables, but you need your effective make and model number from dell.

Yep cool but would the 6 to 6+2 provide enough power for the 1080 ti? i dont want to damage anything so yeah...

can i use two 6 pin to 6+2 pin pcie cables for a gtx 1080 ti

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