3080 FTW3 PCI-E Cable Question

3t3P · 15 Oct 2020 at 11:12

So when/IF I get my 3080 FTW3 I want to feed it as much clean power as possible.

Currently I have two Pig tailed wires giving me x4 6+2 Pins from two connections into the PSU.

In all likelihood I'm thinking this will be fine as Corsair will have rated each pigtail to 300W. It's also listed as a single rail circuit design, so electrically having three separate wires will make no difference.

Here's a pic of the PSU end, note 7 Pins active:

Now I dug around my wire collection, to see if I can feed EACH 8 pin connector on the 3080 with its own wire. Here's what I found, this is the PSU end of a 6+2 PCI-E cable:

Six pins, I believe the 'lost' pin in the top right is a ground wire.

So is this a 150W PCI-E cable that I can use on a GPU?

3t3P · 18 Oct 2020 at 08:42

The cable was I'm very sure amongst others for this PSU.

Corsair usually print on them if they are model specific this cable has no such marking.

Wondering if I should just use one daisy chained PCI-E cable to populate two 8 pin connections on the card and use one remaining pig tailed connection (but only use one plug) to make up the third 8 pin power requirement on the card.

Amazing you even got a card! How's it doing on 450w BIOS?

3t3P · 19 Oct 2020 at 21:41

Pigtails would be designed for 300W

3t3P · 20 Oct 2020 at 20:59

I contacted Corsair who are getting back to me.

Worst comes to worst can buy a legacy cable from corsair for a tenner delivered

3t3P · 21 Oct 2020 at 12:29

Well I've linked them this thread so we shall see

3t3P · 21 Oct 2020 at 22:17

Some here are getting distracted by what my actual question is. That is, about the cable I found and compatibility with my PSU.

The daisy chain cable has two 8 pin connections on it, that makes it a 300watt cable.

300 watts is nothing special at this guage. It's a small to medium sized R/C plane amount of power, nothing mental. If it's made well it won't be a problem.

3t3P · 22 Oct 2020 at 08:40

The spec is 150w per connector but capable in reality of carrying more.

I've had a second reply to Corsair, missing the mark and in grammatically broken English. They've basically said my PSU has enough power. I'm going to message back.

3t3P · 23 Oct 2020 at 20:15

pastymuncher said:
This is what can happen when a gpu pulls too much power down a single lead. That was a quality Seasonic 1000w psu as well.

thanks but again, per my opening post this is not what i'm asking

3t3P · 1 Nov 2020 at 10:53

Corsair have confirmed that the cable is a full 150W 6+2 connector for my PSU.

3t3P · 1 Dec 2020 at 20:58

For anyone finding this thread do not use the cable as depicted in my question, it may cause problems to you.