8 pin to dual 8 pin (6+2)

[radu91]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

[anticlimax]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

[bulgar73]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

https://eustore.cablemod.com/#
BTC

[radu91]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

[Bothebu]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

They make adapters for that....to turn an 8 pin into an 8 + (6+2)
https://www.amazon.com/gp/product/B01LVZBJML/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

[Marvell1]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

They make adapters for that....to turn an 8 pin into an 8 + (6+2)
https://www.amazon.com/gp/product/B01LVZBJML/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

look for 16 awg 18 awg is dangerous imo

[bathrobehero]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

They make adapters for that....to turn an 8 pin into an 8 + (6+2)
https://www.amazon.com/gp/product/B01LVZBJML/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

look for 16 awg 18 awg is dangerous imo

This. And even then I'd be skeptical. 8-pins can deliver 150 watts (6 pin can do 75 watts) or 12.5 amps each so running twice that off of one cable is not a good idea.

There's a reason higher end PSUs give you more 8+6 ports and cables instead of simply giving you more 8+8 (or even 8+8+8+8) cables. I don't think I ever got a 8+8 pin cable with any PSU, only 8+6.

If you go down that route of splitting the 8-pin into 2, check the temperature of the cable all the way and get back to us, I'm curious.

What I do know for sure is that you should never interchange cables for different brand PSUs, they don't use the same standards even if the cables fit perfectly so you'll end up frying stuff.

[vatusasid]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You can use the 2X molex to 1 PCIE 6 pin. It should be able to deliver 75W. Do not use the 8  pin to 8 + 8 (6+2), which cannot deliver 150W+75W

[QuintLeo]

look for 16 awg 18 awg is dangerous imo

This. And even then I'd be skeptical. 8-pins can deliver 150 watts (6 pin can do 75 watts) or 12.5 amps each so running twice that off of one cable is not a good idea.

 The CONNECTOR used for 8-pin PCI-E is specified at 8 amps per pin - multiply times 3 (as only 3 leads are used for +12v) = 24 amps x 12 volts = 288 watts.
 PCI-E spec is VERY conservative on the connector.

 Running an 8-pin plus a 6-pin should be viable if you mind the wire gauge, on a high-quality power supply.

 However DEFINITELY make sure all of the wires used are at LEAST 16 AWG.

 The other question is WHICH EVGA power supply are you using? They DO make some that will handle 4 x GTX 1080 ti in a rig with ONE power supply (G2 1300 for probably the best example) - and THAT power supply has enough connectors by default.


 If you think you need to modify the connectors to "make them fit" you are probably trying to put them in wrong.

[bdiddle]

It will also be safer if you are setting tdp down to like 70%.

If the cards are fine for regular gaming/overclocking where the tdp is pushed way farther, its gotta be somewhat okay to cut the tdp and use some wire splitters

[grape_tectonics]

I think he's trying to stick the 8 pin motherboard power into a graphics card. Don't do it or there will be tears.

[antantti]

R9 295x2 is out of specs card with tdp of 500w and only 2x8-pin connectors, I have seen spikes of 600w at the wall when fully unleashed.

Based on my experiments with those and two normal 8-pin 200w cards chained I would say 250w/ 8-pin is easily doable but going beyond that point you really need to know what you are doing. But it is easy to test, just launch your miner and monitor connector/ cabling temps.

To be really sure you need custom male+female connectors at both ends and heavy wiring between them. In early 2016 when daily eth profits were at $5/20MH I used 20" fans just to cool my connectors...

[bathrobehero]

look for 16 awg 18 awg is dangerous imo

This. And even then I'd be skeptical. 8-pins can deliver 150 watts (6 pin can do 75 watts) or 12.5 amps each so running twice that off of one cable is not a good idea.

 The CONNECTOR used for 8-pin PCI-E is specified at 8 amps per pin - multiply times 3 (as only 3 leads are used for +12v) = 24 amps x 12 volts = 288 watts.
 PCI-E spec is VERY conservative on the connector.

 Running an 8-pin plus a 6-pin should be viable if you mind the wire gauge, on a high-quality power supply.

 However DEFINITELY make sure all of the wires used are at LEAST 16 AWG.

 The other question is WHICH EVGA power supply are you using? They DO make some that will handle 4 x GTX 1080 ti in a rig with ONE power supply (G2 1300 for probably the best example) - and THAT power supply has enough connectors by default.


 If you think you need to modify the connectors to "make them fit" you are probably trying to put them in wrong.

No, 1080 Ti's require 2 x 8 pins and the G2 1300W comes with 6 VGA ports on the PSU and 2 x 6+2 + 6 cables and 4 x 6+2 cables

That's 5 x 8 pins total (they might as well come with only 8 pin single cables) without converters meaning it can only handle exactly 3 pieces of 1080 Ti's.

[radu91]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

They make adapters for that....to turn an 8 pin into an 8 + (6+2)
https://www.amazon.com/gp/product/B01LVZBJML/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

look for 16 awg 18 awg is dangerous imo

This. And even then I'd be skeptical. 8-pins can deliver 150 watts (6 pin can do 75 watts) or 12.5 amps each so running twice that off of one cable is not a good idea.

There's a reason higher end PSUs give you more 8+6 ports and cables instead of simply giving you more 8+8 (or even 8+8+8+8) cables. I don't think I ever got a 8+8 pin cable with any PSU, only 8+6.

If you go down that route of splitting the 8-pin into 2, check the temperature of the cable all the way and get back to us, I'm curious.

What I do know for sure is that you should never interchange cables for different brand PSUs, they don't use the same standards even if the cables fit perfectly so you'll end up frying stuff.

I have evga 1000G. This PSU comes stock with 2 cables that work for 1080ti. I tdp around 70% on 1080ti already tested. They stay around 170Wx4 = ~680w plus the rest goes up to around 800w from the wall. This fits in the 80% push for the PSU which I think it's healthy.

I would have gone with evga 1600w PSU but they are ridiculously out of stock and didn't want to wait. As soon as the bigger psu comes in stock I am ordering it and I'll make another 4 or 5x 1070s rig with the 1000w PSU.

[Bothebu]

I must give juice to 4x 1080ti. I only have 2 of those 8 pin to 8 + 8 (6+2) per PSU. I have another rig 6x 1070 on a corsair PSU.

The rig I want to place the 4 1080ti is a EVGA PSU... Somehow the companies hate each other and even though the cables are same family, they won't fit.

Now my question is, if I cut or use sandpaper to modifiy the shoes that won't go into the PSU, would that be a big nono ?

I tried to find cable to buy separately, they seem to sell them only in complete set, which is almost $100.

You want to blow some shit up?
By all means modify the psu cables.

There are lots of power supplies that can handle running 4 1080 ti's, buy one.

Don't buy the most expensive mining cards, only to cheap out on the power supply.

You must have gotten me wrong. I have two separate PSU. I only lack on enough cables for them. 1080ti needs the 8 pin to 8 + 6 pin cable.

They make adapters for that....to turn an 8 pin into an 8 + (6+2)
https://www.amazon.com/gp/product/B01LVZBJML/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

look for 16 awg 18 awg is dangerous imo

16 awg?  I doubt you will find that.  The wire in the wall on a 15amp circuit is 14 awg and that is rated to carry 1800 watts.  20amp circuit uses 12 wire.   18 gauge is definitely enough to carry 150 or so watts.

[antantti]

16 awg?  I doubt you will find that.  The wire in the wall on a 15amp circuit is 14 awg and that is rated to carry 1800 watts.  20amp circuit uses 12 wire.   18 gauge is definitely enough to carry 150 or so watts.

It is about amps not watts:

Wall// 150W/1.25A/120V //PSU// 150W/11.25A/12V //GPU

edit: 100% PSU efficiency to make it simple.

[Auponef]

I think he's trying to stick the 8 pin motherboard power into a graphics card. Don't do it or there will be tears.

They are incompatible. You need adaptors.

[bathrobehero]

I have evga 1000G. This PSU comes stock with 2 cables that work for 1080ti. I tdp around 70% on 1080ti already tested. They stay around 170Wx4 = ~680w plus the rest goes up to around 800w from the wall. This fits in the 80% push for the PSU which I think it's healthy.

I would have gone with evga 1600w PSU but they are ridiculously out of stock and didn't want to wait. As soon as the bigger psu comes in stock I am ordering it and I'll make another 4 or 5x 1070s rig with the 1000w PSU.

So you mean you have a couple of 8+8 pin cables?

[nu1mlock]

No, 1080 Ti's require 2 x 8 pins and the G2 1300W comes with 6 VGA ports on the PSU and 2 x 6+2 + 6 cables and 4 x 6+2 cables

That's 5 x 8 pins total (they might as well come with only 8 pin single cables) without converters meaning it can only handle exactly 3 pieces of 1080 Ti's.

I have 36x 1080 Ti's (4 different models) and 30 of them (3 different models) are using 8+6 pins. Only one of the four models use 8+8 pins.

[bathrobehero]

No, 1080 Ti's require 2 x 8 pins and the G2 1300W comes with 6 VGA ports on the PSU and 2 x 6+2 + 6 cables and 4 x 6+2 cables

That's 5 x 8 pins total (they might as well come with only 8 pin single cables) without converters meaning it can only handle exactly 3 pieces of 1080 Ti's.

I have 36x 1080 Ti's (4 different models) and 30 of them (3 different models) are using 8+6 pins. Only one of the four models use 8+8 pins.

Huh, didn't know that but I can see the FE also has 8+6.