ShadowNinja714
So I just got my 3090 a few days ago and I have experienced some hard pc crashing. I have to toggle the PSU switch in order to boot after a crash.

Specifically playing Escape from Tarkov. I don't have any rtx enabled games as I just upgraded from a 1080ti FTW3.

System Specs:
ASUS Rog Crosshair VIII
Ryzen 3900x - no oc.
NZXT Z73 Kraken AIO
2x 16gb 3600 DDR4 CORSAIR VENGEANCE running xmp settings.
Thermaltake Toughpower Grand RGB 850W 80+ Gold(pushing 4 years old now)

9x Corsair LL120 120mm fans
CORSAIR RGB LED Lighting PRO Expansion Kit

Storage:
2x nvme ssd
2x samsung evo ssd.

peripherals
Corsair Void Pro headset
Corsair Strafe keyboard
G502 Lightspeed mouse
Amazon basics speakers
Lian Li Strummer Plus 24pin
Sabrent USB 2.0 Sharing Switch

Side note: I ordered some custom pcie cables from CableMods for the 3090. I got 3x pcie 6+2 cables for my PSU, based on their cable generator.

So I got my card on Thursday, got it installed and using the new cable mod cables. Once installed I power up with no issues.
Made sure my Nvidia Geforce drivers were up to date. (I don't have the super latest that Jacob posted about yet)

Installed PX1 and did the firmware update. Right out of the gate, I tried the oc scan, and It just failed. So I ignored that for the time being until I had more time to research into it.
Ran a few raids in Tarkov, no issues.

I used my PC all day Friday for work (rdp to another work station) no issues.

Later in the night, I played Tarkov for roughly 3 hours. I started running into the crashing when I attempted to load into the hideout. Just instant shutdown. No sensor warning/beeping, nothing. Just off. The power led on my case was still illuminated. I had to toggle the PSU switch before I could boot again.
From there, anytime I loaded Tarkov and went into the hideout, full system crash. I tried to have HW monitor and gpu-z open and watch for anything but just instant shutdown. So i rebooted again and shut down like normal.


Today, I booted up, jumped into Tarkov and was able to get into the hideout multiple times with 0 issues. Ran a few raids and hit the hideout each time with no issues.
So I decided to try the OC scan again, and it completed as expected and gave me a suggested oc +200mem +114gpu. So I set it and ran the OC again. Passed with no issues.

From there, I set the power target to 80% and ran a few raids. No issues at all. But I only played for about 2 hours.

So I am concerned and kinda stumped.
I am not sure now if I should be looking into a new PSU with a higher power rating or what.

So now here I am asking the masses. What do you guys think of my situation?

I was having the same issue with an EVGA 750w GA Gold. Sudden shutdowns. I bought today a NZXT C850 Gold, no a single issue since I put it on my build. There's another thread with people reporting what PSU are working and which doesnt. https://forums.evga.com/W...-WORKING-m3118557.aspx

So, that's basically my next step then, just go right for the higher rated PSU? I have no problem nabbing one. Just want to make sure it's the next correct approach. ✌️

ShadowNinja714
So, that's basically my next step then, just go right for the higher rated PSU? I have no problem nabbing one. Just want to make sure it's the next correct approach. ✌️

My best bet would be check the list and see what people have, and just purchase one of the model listed, my c850 NZXT is working perfectly, but so are others EVGA, Corsair, and Seasonic. 100% don't get an EVGA GA Model. Lot of people reporting this GA model to have issues, myself included.

850w g3.
Runs perfectly with 3090 ftw3 ultra. Idle 26C, loaded - 68C 

I would ask if the shutdown is instant when playing the games in question or is it an overtime thing.

It could be very much an inrush issue which I would say a lot of people don't know or even understand.

For most motors, inrush is normally assumed to be 4 times the normal current (large inductive motors) for reference.

I run EMC for a living and do power quality testing. I have seen items that pull mA of power and have 6A inrushes.

I would say that I would go with nothing short of a 850w PSU, this would give you the most overhead since you have to remember inrush is not exclusive to one item on your board but ALL items. 

Also it would account for slight power dips due to dirty power.

Has anyone with an 850GA tested it using a power conditioner, or a surge protector strip, or just connected directly to the wall?  I wonder if dirty power has anything to do with the issues the GA is having?  Just a thought and could be completely baseless, but just something I thought of as I see my entertainment center has 2 power conditioners and never had power issues but can tell the power fluctuates a lot between boosts and stabilizing and cleaning the power coming in. 

militiaman293
I would ask if the shutdown is instant when playing the games in question or is it an overtime thing.

It could be very much an inrush issue which I would say a lot of people don't know or even understand.

For most motors, inrush is normally assumed to be 4 times the normal current (large inductive motors) for reference.

I run EMC for a living and do power quality testing. I have seen items that pull mA of power and have 6A inrushes.

I would say that I would go with nothing short of a 850w PSU, this would give you the most overhead since you have to remember inrush is not exclusive to one item on your board but ALL items. 

Also it would account for slight power dips due to dirty power.

It varies. I just tried playing again. Played for 30 minutes and it crashed again.  But yet earlier today I had two hours with no issues.

ShadowNinja714

militiaman293
I would ask if the shutdown is instant when playing the games in question or is it an overtime thing.

It could be very much an inrush issue which I would say a lot of people don't know or even understand.

For most motors, inrush is normally assumed to be 4 times the normal current (large inductive motors) for reference.

I run EMC for a living and do power quality testing. I have seen items that pull mA of power and have 6A inrushes.

I would say that I would go with nothing short of a 850w PSU, this would give you the most overhead since you have to remember inrush is not exclusive to one item on your board but ALL items. 

Also it would account for slight power dips due to dirty power.

It varies. I just tried playing again. Played for 30 minutes and it crashed again.  But yet earlier today I had two hours with no issues.

Hmmm, that sounds more thermal to be honest.

Could also be a lemon, that is what my 1080TI was doing.

Worked fine sometimes, others crashes constantly.

I would call Tech support and let them troubleshoot it.

Just as a data point I'm running a Seasonic Prime TX-750 with the system in my sig. Slightly overclocked, but nothing extreme. I am also using Antec power cable extensions for everything besides my 2 SATA power connectors. No splitting of PCI-E cables, however, as this power supply accommodates up to 4 individual 8 pin PCI-E cables. No issues at all.

rain2_usa
Has anyone with an 850GA tested it using a power conditioner, or a surge protector strip, or just connected directly to the wall?  I wonder if dirty power has anything to do with the issues the GA is having?  Just a thought and could be completely baseless, but just something I thought of as I see my entertainment center has 2 power conditioners and never had power issues but can tell the power fluctuates a lot between boosts and stabilizing and cleaning the power coming in. 

 
It's PSU design that is the issue here.
 
It has to do with the secondary side and the caps used, could how they are used or the actual size.
 
Transient Power draw is easily twice the measured normal power draw. It only happens for a few microseconds however.
 
To put it in scale, for a 350W card it would be 700W+, for a 450W card that would be 900W+.
 
So what happens on the PSU end is it just plain shuts down because the secondary can't handle the load due to design.
 
Wattage has nothing to do with this