Will a Corsair SF750 worth with an Aorus 3080 Xtreme?

[adb1028]

Gigabyte recommends 850w. I already have the PSU and the GPU is on it’s way. I don’t plan on much overclocking other than messing around in MSI afterburner. I’m pairing it with a 5600x (though I have a 5800x also, not sure which one I’m keeping yet).

 

Will 750w work? Also, how do I power the card? Looks like the psu has 2 VGA cables with 2 PCIE 8 pins on each end (4 total). Is it OK to use two 8 pins off on one connector on this PSU and a single 8 pin off of the other? Lots of conflicting info out there!!

thanks In advance

[Ankerson]

 

Nope...

 

@jonnyGURU

[adb1028]

14 minutes ago, Ankerson said:

 

Nope...

 

@jonnyGURU

Care to elaborate or....

[Ankerson]

1 minute ago, adb1028 said:

Care to elaborate or....

 

Corsair says they don't work in all situations, they tested them.

[adb1028]

6 minutes ago, Ankerson said:

 

Corsair says they don't work in all situations, they tested them.

Can you give me a source that answers my specific question? Thanks

[Ankerson]

2 minutes ago, adb1028 said:

Can you give me a source that answers my specific question? Thanks

 

Waiting for him to reply.... I tagged him.

[adb1028]

9 minutes ago, Ankerson said:

 

Waiting for him to reply.... I tagged him.

Thank you! I didn’t realize you tagged someone

[Ankerson]

1 minute ago, adb1028 said:

Thank you! I didn’t realize you tagged someone

 

He will tell you why... Once he replies.

[Guest]

3080 has some serious power spikes.  Like, within milliseconds.  Normally, the secondary caps of the PSU have enough charge in them to buffer the spikes.  Not what they're made for, but it works.

 

Due to the small size of the SF750, there's fewer/smaller secondary capacitors and therefore minimal capacitance to buffer those spikes.  So the PSU shuts down.

 

[adb1028]

11 minutes ago, jonnyGURU said:

3080 has some serious power spikes.  Like, within milliseconds.  Normally, the secondary caps of the PSU have enough charge in them to buffer the spikes.  Not what they're made for, but it works.

 

Due to the small size of the SF750, there's fewer/smaller secondary capacitors and therefore minimal capacitance to buffer those spikes.  So the PSU shuts down.

 

So would the SF750 in theory not be suitable for ANY 3080? 
 

If I run the Aorus 3080 Xtreme @ stock, do I still run the chance of having issues? Is it just not possible at all?

 

what would you recommend? I am using the new Lian Li o11 Mini which only accepts SFX power supplies.

 

thanks for the insight!

[Ankerson]

2 minutes ago, adb1028 said:

So would the SF750 in theory not be suitable for ANY 3080? 
 

I run the Aorus 3080 Xtreme @ stock, do I still run the chance of having issues? Is it just not possible at all?

 

what would you recommend? I am using the new Lian Li o11 Mini which only accepts SFX power supplies.

 

thanks for the insight!

 

 

As far as I know NONE of the SFX PSUs actually work or do well with them.

[adb1028]

24 minutes ago, jonnyGURU said:

3080 has some serious power spikes.  Like, within milliseconds.  Normally, the secondary caps of the PSU have enough charge in them to buffer the spikes.  Not what they're made for, but it works.

 

Due to the small size of the SF750, there's fewer/smaller secondary capacitors and therefore minimal capacitance to buffer those spikes.  So the PSU shuts down.

 

If the peak power limit of the Aorus Xtreme is 470watts and the peak multi threaded load of a 5600x is ~150watts, that puts the system at around 620watts in the worse case scenario right? Shouldn’t that be fine considering it’s 750w platinum PSU? Are you saying the 3080 could spike even higher? Or am I missing something?
 

This is stuff I don’t really understand so thank you for explaining in layman’s terms!

[Guest]

17 minutes ago, adb1028 said:

So would the SF750 in theory not be suitable for ANY 3080? 
 

If I run the Aorus 3080 Xtreme @ stock, do I still run the chance of having issues? Is it just not possible at all?

 

what would you recommend? I am using the new Lian Li o11 Mini which only accepts SFX power supplies.

 

thanks for the insight!

If it's an AIB card with stock clocks, it will work.

 

 

[Guest]

1 minute ago, adb1028 said:

If the peak power limit of the Aorus Xtreme is 470watts and the peak multi threaded load of a 5600x is ~150watts, that puts the system at around 620watts in the worse case scenario right? Shouldn’t that be fine considering it’s 750w platinum PSU? Are you saying the 3080 could spike even higher? Or am I missing something?
 

This is stuff I don’t really understand so thank you for explaining in layman’s terms!

That 470W "peak" is bogus.  The person reporting that is not capturing spikes with an oscilloscope.

 

[Ankerson]

4 minutes ago, jonnyGURU said:

If it's an AIB card with stock clocks, it will work.

 

 

 

Yes, they do work, a few on the EVGA forum running them with stock clocks, SF 750W.

 

So far, haven't heard back anything about problems yet..

[adb1028]

Just now, Ankerson said:

 

Yes, they do work, a few on the EVGA forum running them with stock clocks, SF 750W.

 

So far, haven't heard back anything about problems yet..

I’m confused....you said in your first post it wouldn’t work?? 
 

so it WILL work then? As long as I don’t OC it?

[Ankerson]

14 minutes ago, jonnyGURU said:

That 470W "peak" is bogus.  The person reporting that is not capturing spikes with an oscilloscope.

 

 

Likely using a kill watt or just looking at GPUz.... 

 

Like all of them are.....  

[Ankerson]

5 minutes ago, adb1028 said:

I’m confused....you said in your first post it wouldn’t work?? 
 

so it WILL work then? As long as I don’t OC it?

 

That's a maybe, depending on etc....

 

I said they don't work in all situations...

 

That said I wouldn't be surprised if you have some problem.

 

Not something I would just do and forget about it.

 

 

 

 

[adb1028]

5 minutes ago, Ankerson said:

 

Likely using a kill watt or just looking at GPUz.... 

 

Like all of them are.....

The number is actually 450watt power limit, this is a number a got from Gigabytes website. Evidently there was a bios update for the 3080 Xtreme that raised the limit to 450watt.

 

i don’t know what that actually means, I just assumed it meant at stock settings it could potentially peak to 450watts

[Guest]

4 minutes ago, Ankerson said:

 

That's a maybe, depending on etc....

 

I said they don't work in all situations...

 

That said I wouldn't be surprised if you have some problem.

 

Not something I would just do and forget about it.

 

 

 

 

Right.  You have to factor in EVERYTHING.  Like what CPU you're using, etc.

 

Fortunately, you're only considering a 65W CPU, so you're probably ok.

 

[Ankerson]

Just now, adb1028 said:

The number is actually 450watt power limit, this is a number a got from Gigabytes website. Evidently there was a bios update for the 3080 Xtreme that raised the limit to 450watt.

 

i don’t know what that actually means, I just assumed it meant at stock settings it could potentially peak to 450watts

 

Yeah, but that doesn't include the Power spikes that can be and are a lot higher.

 

Up to about double that.

[Ankerson]

1 minute ago, jonnyGURU said:

Right.  You have to factor in EVERYTHING.  Like what CPU you're using, etc.

 

Fortunately, you're only considering a 65W CPU, so you're probably ok.

 

 

Yeah as long as he doesn't start sliding over the power sliders and OCing or downloading VBIOS etc.