Aurora R7, PSU dimensions

@speedstep I understand what you are saying.  You need PCiE 8PIN or 6+2, for the GPU.  Correct.  But we're not talking about a GPU in this thread. 

The question is only about the header on the motherboard, nothing about the GPU.  See the photos, it is clear, the Aurora R7 motherboard does not take PCiE 8 or 6+2.  I think there might have been some misunderstanding about the question. I assume everything is resolved now.  Thanks for your input! 

@Anonymous Yes, you are good on the R7 mobo header GPU_PWR. And as always, never force anything. 

Properly wired and lined up yellow/black 12v/ground lines in 4PIN ATX in my Aurora R7.  Been like this for quite some time now.  A number of other people on this forum have done this upgrade too.  I know it can be confusing because that's not what you might expect if you were assuming a legacy aftermarket motherboard's PCiE_PWR header, but this is just how it was designed on this motherboard (maybe that's why it's called GPU_PWR).  We are talking Aurora R7 here. 

As clearly demonstrated in this photo, the R7 motherboard does not accept PCiE 8 PIN, or PCiE 6+2 PIN.  Inserting it would be dangerous and require forcing it. 

6+2 is not the same as EPS12v period.PIN #4 is keyed differently. The voltages are reversed for 4+4 vs 6+2 as well as the 5v sense lines. I wont say its impossible to put the wrong connector somewhere because I have seen the results of this and its not pretty.

4 + 4 is motherboard only4+4 is NEVER for this only 6 +2 isSIX PLUS 2 is ONLY for GPUGPU VS CPU Connectors NEVER Complatible

Users have forced EPS12v into 6+2 and the other way round.

It should not work but it can be gorrila grip forced into motherboard or GPU regardless of the keying.

I have even seen molex D connectors forced in backwards killing motherboards and hard drives.

@Anonymous You must have special quoting privileges. 

The header on the motherboard is referenced as GPU power.

Thats where the references confusion begins.

I have done design and field service for over 25 years and I HAVE seen users that FORCED connectors both correct and incorrect into the wrong connections.

I am fully aware of UL94-V, CSA, VDE, safety standards as well as IEEE, PCI-SIG, Dell, Energy Star etc standards for both design as well as FCC and Safety Standards.  Others have used Youtube videos as absolute proof but I prefer written engineering standards that will hold up in court and are validated by manufacturers and my engineering peers.

Before dealing with Anger issues Brute force users that can make a D keyed molex go in backwards on  both motherboard and hard drive as well as FORCE EPS12v 8 pin into GPU PCI-E Aux connector OR Force 6+2 into motherboard EPS12v connector I would have said its impossible to do that. Now I know that this needs to be FULLY DOCUMENTED to prevent catastrophic misunderstandings.

@speedstep NO I am not.

You are not what?  What are you even referencing?

To be clear, I did not force anything.

The 4+4 connections went to the MB and the 6+2 went to the adapter then the GPU.

@Anonymous

I disagree entirely on the confusion factor.

Telling people plugs are ok referencing only the number of pins is very dangerous.

There are many connectors with the correct number of pins that are not correct to be inserting things into.

Calling out a non standard motherboard connector as GPU power is also a bad idea.  That may be the designation for this board but its not a standard like EPS12v or ATX or MATX form factor.

https://www.intel.com/content/www/us/en/design/technologies-and-topics/motherboard-form-factors/technical-library.html

Dell doesn't actually post or document their BTX implementation or pinouts to connectors etc.

The other reason ATX power supply is wrong is because
It is no longer allowed to have -5V signal on Pin 20 of the 24 pin connector.
is now designated a no connect or NC and some older dell models require this
connection and do not support PFC

The other issue is LESS THAN 150W combined for the 3.3v/5v Rails or less than 3 AMPS on 5vSB.

Thats where EPS12v 2.92 PFC 80 Percent bronze certified becomes an issue.

NOTE With Dell 3.3v is 30AMPS and combined is 225W not 90 to 130W

EPS12v 2.92 NOT ATX 12v 2.4

 @speedstep 

The RTX 3070 FE that I have doesn't not look like that at all. 

I'm just a home user so all of the tech specs you posted go right over my head.  How is someone like me supposed to determine if a PSU is compatible with their system?  I used the included cables as directed and did not have to force any connections.

The RTX came with the adapter that I posted to connect to the PCIe 6+2 cable.

"determine if a PSU is compatible with their system? "

the basics are the output spec max for each rail.

Bare minimum overall for RTX 3XXX series using 12 pin connector is 850W. You should not choose a single spec of watts and say one and done it works.

You have to have 80 percent efficient  PFC power supply that meets at least EPS 12v 2.9 spec.  That means combined power for 3.3v/5v rails is AT LEAST 150W and 24 Amps.  There are lots of 650, 750, 850, 1000W units that DO NOT MEET that spec. Worse the power on the 5vSB should be at LEAST 3 amps.  Dell has 225W combined power for the 3.3v/5v rails with 30 AMPS and 32 AMPS on those rails.  All 12v connections are 18 AMPS max in keeping with UL fire safety margin. Dells power supply has 32 AMPS for 5v and 30 AMPS for 3.3v combined power 225W. 4 AMPS for 5vSB.  The design specifications are not plucked from thin air. They are going by EPS12v specifications for power output and safety margin and temperature variation.  These are known engineering and safety standards not anecdotal YouTube videos. They follow UL and FCC and IEEE standards. Unfortunately there are those who will say they meet spec and they do not.

EVGA 850 works just barely its not as good as the dell unit but I have tested it on an XPS 8900 and and XPS 420 and several other models with 1080TI video card and it runs without issue.  Power supplies that are not quite good enough will only have 90 to 130W combined and will lockup, reboot or worse fail and fry everything

https://www.evga.com/Products/Product.aspx?pn=110-BQ-0850-V1

Note the current on each rail170W is minimum spec DELL has 225W

Jeepers, they include a "vibration damper" with the Diablotek power supply...

I think I got gypped...

Submitted for informational purposes only...

as the fine print all-ways states, "all specifications are subject to change"...

This is the 850 Watt power supply I recently removed from my 6 month old Alienware 9, fitted with:

Intel i9 9900KS--liquid cooled, two RTX 2080 Supers in SLI, 32 GB Ram, 2 TB Kioxia NVMe, 2TB 7200 rpm hard drive.

I got the Delta flavor...

I had no problems with this unit, I just wanted a little more headroom so I upgraded to a 1500 Watt.

Alienware/Dell engineers have the difficult task of balancing performance, reliability and keeping things a reasonable price.

DELL power supplies and OEM video cards are matched.  When you buy a retail card or power supply you may go out of specification and lockup or worse reboot etc.  If you are a really cheap guy and buy a $29   675W  crab shack power supply from god knows where and it fries everything thats on you.  The diablotek units from best buy fit into this category.  When you go back and demand they fix your pc they will refund you your $29 and say have a nice day.

The dell 850 posted here has 4 AMPS on 5vSB is GOLD Certified and has 140W combined for 3.3v/5v rails  DPN NJVDM

Dell 850 from Aurora R4 5 6 7 8 9

There is a reason these are $30 and its not a good one.

@speedstep 

I bought a Seasonic Focus GX-750. 

Did I buy the wrong PSU?

Thanks.

The sea sonic power supply is short 40 to 70W combined on 3.3v/5v rails

doesn't meet EPS12v  spec for those rails.

SEASOSONIC

So if the system needs more than 100W from those rails or more than 20AMPS from those rails its going to be an issue.

EPS 12v Spec

EVGA 700BRDell Power supply Note 225W on those rails