Power Supply Issues?

[poisonbest555]

I just got my hands on a 3090 to replace a 3070, and while I try to play Battlefield 5 at 2k to try and test it out, the PC suddenly shuts down and restarts back up. Judging by this, I assume that it may have something to do with the power supply, but I have a 850 Watt EVGA 80+ gold unit.

 

I wanted to ask whether it is the power supply or something else that I do not know about.

 

I don't overclock besides the minor Asus overclock that increases the cpu to 4.7 ghz that comes with activating XMP.

 

My specs are:

 

i9-9900k

32 gigs 3200 speed RAM

Asus Prime Z390

Nvidia 3090 Founders

80+ Gold EVGA 850 Watt Power Supply

1 500 gb Pci-4.0 SSD

1 500 gb SATA SSD

1 2 tb 7200 RPM Harddrive

[seon123]

Which of EVGA's 11 different 850W 80+ Gold rated PSUs do you have?

6 minutes ago, poisonbest555 said:

I don't overclock besides the minor Asus overclock that increases the cpu to 4.7 ghz that comes with activating XMP.

Have you tried disabling it?

[Universes]

What's the actual model of the EVGA power supply? Maybe you loaded up one rail too much. Which cable plugs on the power supply unit did you use?

 

Sounds like the 3090 is tripping the over current protection.

[poisonbest555]

3 minutes ago, Universes said:

What's the actual model of the EVGA power supply? Maybe you loaded up one rail too much. Which cable plugs on the power supply unit did you use?

 

Sounds like the 3090 is tripping the over current protection.

The specific model type is the supernova. Could you elaborate on what a rail is, and also why it matters what cable plugs? I agree that the 3090 is probably tripping it, its just I assumed that 850 watts would be okay for it.

[Universes]

 

4 minutes ago, poisonbest555 said:

The specific model type is the supernova. Could you elaborate on what a rail is, and also why it matters what cable plugs? I agree that the 3090 is probably tripping it, its just I assumed that 850 watts would be okay for it.

If this is your power supply model: https://www.evga.com/products/product.aspx?pn=220-GA-0850-X1

Then this is your output of your power supply. It says single +12v rail, confirmed by seeing that there is only one +12v DC Output. This power supply can provide 70.8A (amps) of current and 849.6 watts of the rated 850 watts of the power supply through the +12v rail. The +12v DC output is what your CPU, RAM, and GPU uses. 

If the power supply had more than one +12v rail, there would be more than one +12v DC Output, each with lower Max Output on the 'amps of current' but a high total Combined wattage (usually). 

What matters about the cable plugs is when you have a multi rail PSU, you could have everything plugged into one or two rails, meaning the power draw is not distributed evenly.

This is an example of a multi rail PSU

http://i.imgur.com/PLmITp2.jpg

 

You can find a lot of information about PSU, multi rail, etc online. 

 

https://forums.tomshardware.com/faq/power-supply-101-understanding-power-supplies-and-selecting-the-right-one-for-the-job.1608758/

 

 

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Anyways, back to your original problem. If what I found is your correct model of PSU, then it doesn't seem like over current protection. It could possibly be because of the high power draw of the 3090 and it's sensitivity to the power it receives, that your PSU isn't able to give it to the 3090 so it turns itself off in order to protect itself and everything connected to it. 

[poisonbest555]

19 minutes ago, Universes said:

 

If this is your power supply model: https://www.evga.com/products/product.aspx?pn=220-GA-0850-X1

Then this is your output of your power supply. It says single +12v rail, confirmed by seeing that there is only one +12v DC Output. This power supply can provide 70.8A (amps) of current and 849.6 watts of the rated 850 watts of the power supply through the +12v rail. The +12v DC output is what your CPU, RAM, and GPU uses. 

If the power supply had more than one +12v rail, there would be more than one +12v DC Output, each with lower Max Output on the 'amps of current' but a high total Combined wattage (usually). 

What matters about the cable plugs is when you have a multi rail PSU, you could have everything plugged into one or two rails, meaning the power draw is not distributed evenly.

This is an example of a multi rail PSU

http://i.imgur.com/PLmITp2.jpg

 

You can find a lot of information about PSU, multi rail, etc online. 

 

https://forums.tomshardware.com/faq/power-supply-101-understanding-power-supplies-and-selecting-the-right-one-for-the-job.1608758/

 

 

-----------------------------------------------------------------------------------------------------------------------------------------------------

 

Anyways, back to your original problem. If what I found is your correct model of PSU, then it doesn't seem like over current protection. It could possibly be because of the high power draw of the 3090 and it's sensitivity to the power it receives, that your PSU isn't able to give it to the 3090 so it turns itself off in order to protect itself and everything connected to it. 

Okay so Do you think I need to get a better PSU, I really don't want to but if I must then it shall be.

Edited July 20, 2021 by poisonbest555

[Universes]

On 7/20/2021 at 1:30 PM, poisonbest555 said:

Okay so Do you think I need to get a better PSU, I really don't want to but if I must then it shall be.

I can't tell for certain that it is your PSU that is the problem. You can try more diagnosing to see if it really is the PSU, but based on my knowledge and searching for similar incidents, it does appear to be the Over Current Protection on your PSU tripping causing the shutdown. Here is one reference from a post on the LTT forums: 

 

It sucks that PSUs are also more expensive in the current market, but not much you can do since you already have a 3090 at this point.