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3080 power requirments

Hi, I know that the 3080 needs 2 8 pin connectors to work but would it still work if one of the 8 pins were from a 6 to 8pin converter? Im not fully sure if that would be sufficient for dealing with any power spikes?

 

Edit: Im a moron for not mentioning but its a 750 watt gold rated psu and my cpu is only a 3600

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i dont think it will be problem if you dont plan on overclocking at all but there's a possible chance here....

Make sure to quote me if you want me to respond
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Which PSU do you have?

I am currently annoyed at Apple for making a stupid incompatibility between their iMac G5 ALS 1.8 GHz and iMac G5 ALS 2 GHz logic board models.

820-1540-A, while the same form factor (and is 95% compatible) does not work interchangeably with 820-1747-A because one has pins and one has pin sockets.

Blarg.

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Which exact PSU?

I am currently annoyed at Apple for making a stupid incompatibility between their iMac G5 ALS 1.8 GHz and iMac G5 ALS 2 GHz logic board models.

820-1540-A, while the same form factor (and is 95% compatible) does not work interchangeably with 820-1747-A because one has pins and one has pin sockets.

Blarg.

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Just now, ragnarok0273 said:

Which exact PSU?

Cant be 100%, but its an EVGA Supernova G1 if memory serves me. The G1 bit may be wrong, but its definitely a supernova 

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Yeah but which psu. The model plenty garbo 750w gold psu's.

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Well, there's no G1, so it's probably a G2.

Just wanted to make sure it wasn't one that would set on fire.

Why do you not have 2 8-pin connectors?

I am currently annoyed at Apple for making a stupid incompatibility between their iMac G5 ALS 1.8 GHz and iMac G5 ALS 2 GHz logic board models.

820-1540-A, while the same form factor (and is 95% compatible) does not work interchangeably with 820-1747-A because one has pins and one has pin sockets.

Blarg.

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1 minute ago, jaslion said:

Yeah but which psu. The model plenty garbo 750w gold psu's.

 

1 minute ago, ToastedVivid said:

Cant be 100%, but its an EVGA Supernova G1 if memory serves me. The G1 bit may be wrong, but its definitely a supernova 

 

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Just now, ragnarok0273 said:

Well, there's no G1, so it's probably a G2.

Just wanted to make sure it wasn't one that would set on fire.

Why do you not have 2 8-pin connectors?

I really cant remember, it was just how it was when I was given it by a friend.

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2 minutes ago, ragnarok0273 said:

Well, there's no G1, so it's probably a G2.

https://www.evga.com/products/specs/psu.aspx?pn=dbeb37b5-f39d-4754-8378-46ec2f983435

 

1 minute ago, ToastedVivid said:

I really cant remember, it was just how it was when I was given it by a friend.

...I mean, if you have managed to check that PCIe power connectors you've got, then surely you could check what exact PSU it is that you're using?..

If it's the one I linked above, then according to the spec sheet, it should have four PCIe 8-pin (6+2) connectors.

 

That being said, it's also based on an 8+ year old, group regulated platform, so I wouldn't use it with a 3080.

Well, perhaps you could try it out, most likely notice that it doesn't work and hope that the PSU's protections will kick in to shut down safely, or just buy a new, good power supply, since I can't imagine that that'd be much of a problem if you can afford a 3080.

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It says that PSU has 4x 6+2 PCIe connectors. What's the issue?

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Hey,
not sure if it is already answered for your case, since the supply really seems to have enough connectors....

The point I want to mention: A 3080 can have some significant power spikes. 
My Card had a maximum Spike of almost 450W at my tests. This was for less than a seconds, sure,

but ... 750W can be close depends on the cart and other system components 🙂
(Maybe not thermal wise but peak overcurrent protection wise)

 

To make sure; I am quite sure it will work for 99% of the cases quite fine. But on benchmark loads the power consumption really seem to need 2x8 pin. 
(Mine even has 3x 8 pin to make sure nobody uses a split cable for 1x 8 pin split to 2x 8 pin plugs 😅)

If you somehow can avoid having less than 2 separate 8 pin cables, you probably should.

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750w 60A single rail should do the trick.

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4 hours ago, ToastedVivid said:

Hi, I know that the 3080 needs 2 8 pin connectors to work but would it still work if one of the 8 pins were from a 6 to 8pin converter? Im not fully sure if that would be sufficient for dealing with any power spikes?

 

Edit: Im a moron for not mentioning but its a 750 watt gold rated psu and my cpu is only a 3600

 

Assuming you don't go for a very high powered card, but one with only two 8pins it will work just fine. The difference between a 6pin and an 8 pin is that the latter has two grounds extra, which are there for stability.  

 

image.png.619d82314850cee4320fd022571cf1bf.png

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On 1/26/2021 at 6:10 PM, Analog said:

 

Assuming you don't go for a very high powered card, but one with only two 8pins it will work just fine. The difference between a 6pin and an 8 pin is that the latter has two grounds extra, which are there for stability.  

 

image.png.619d82314850cee4320fd022571cf1bf.png

Just got back to this thread and that is a very re assuring answer, thanks a lot for that

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