[SOLVED] PC Shuts off while gaming

[365timer]

So I got lucky and upgraded a bunch of the parts in my system (Original and New at bottom of post). Original was built about 4-5 years ago . After the upgrade, the system will just shut off and sometimes restart in the middle of a demanding game (Computer is fine idling/youtube for the entire day). I say demanding here because it's been fine while playing minecraft, but keeps shutting down playing apex legends. The only things that are the same from the original are the drives and the PSU. My initial thought is that maybe the PSU can't handle the new draw when under a large load? It doesn't seem to be a cooling problem as I've watched it shut off at about 70-75C having a game open on one monitor and hwinfo open on the other. I was also able to aida64 cpu stress test it and temps for the cpu locked at about 84C and went down after shutting off the test. I'll be the first to admit that the fans of the PSU probably have collected a lot of dust, so my first thing to do was going to be to try to clean it out, but maybe it's too late and ill just need to buy a new PSU or maybe 850w is not enough to handle this new system. Does this seem correct? Or is it possible that there may be something else wrong that I'm not thinking of? Just mainly wanted to make sure there wasn't something else before I pull the trigger on a new psu. Any recommendations or thoughts to consider are greatly appreciated.

Original:
1800x
STRIX X370-F GAMING ATX
NZXT Kraken X62
16 GB 3000 MHZ Corsair vengeance
gtx 1080ti 11 GB ti strix
WD Blue 1 TB
WD Black 2 TB
850 evo 500 GB
960 evo m.2 nvme 1 TB
EVGA G3 850 W 80+

New:
5800x
Gigabyte X570 AORUS ULTRA
h115i Pro XT (Pump died in kraken, h115i has already been used for a year)
Corsair Vengeance RGB Pro SL 32GB (4x8GB) DDR4 3600
Gigabyte GeForce RTX 3080 Ti 12 GB EAGLE
WD Blue 1 TB
WD Black 2 TB
850 evo 500 GB
960 evo m.2 nvme 1 TB
EVGA G3 850 W 80+

 

[Flayed]

So I got lucky and upgraded a bunch of the parts in my system (Original and New at bottom of post). Original was built about 4-5 years ago . After the upgrade, the system will just shut off and sometimes restart in the middle of a demanding game (Computer is fine idling/youtube for the entire day). I say demanding here because it's been fine while playing minecraft, but keeps shutting down playing apex legends. The only things that are the same from the original are the drives and the PSU. My initial thought is that maybe the PSU can't handle the new draw when under a large load? It doesn't seem to be a cooling problem as I've watched it shut off at about 70-75C having a game open on one monitor and hwinfo open on the other. I was also able to aida64 cpu stress test it and temps for the cpu locked at about 84C and went down after shutting off the test. I'll be the first to admit that the fans of the PSU probably have collected a lot of dust, so my first thing to do was going to be to try to clean it out, but maybe it's too late and ill just need to buy a new PSU or maybe 850w is not enough to handle this new system. Does this seem correct? Or is it possible that there may be something else wrong that I'm not thinking of? Just mainly wanted to make sure there wasn't something else before I pull the trigger on a new psu. Any recommendations or thoughts to consider are greatly appreciated.

Original:
1800x
STRIX X370-F GAMING ATX
NZXT Kraken X62
16 GB 3000 MHZ Corsair vengeance
gtx 1080ti 11 GB ti strix
WD Blue 1 TB
WD Black 2 TB
850 evo 500 GB
960 evo m.2 nvme 1 TB
EVGA G3 850 W 80+

New:
5800x
Gigabyte X570 AORUS ULTRA
h115i Pro XT (Pump died in kraken, h115i has already been used for a year)
Corsair Vengeance RGB Pro SL 32GB (4x8GB) DDR4 3600
Gigabyte GeForce RTX 3080 Ti 12 GB EAGLE
WD Blue 1 TB
WD Black 2 TB
850 evo 500 GB
960 evo m.2 nvme 1 TB
EVGA G3 850 W 80+

You can try reducing the power limit to the graphics card with MSI Afterburner and see if it still shuts down under load. That will give you an idea if a new PSU is the way to go.

 

[365timer]

You can try reducing the power limit to the graphics card with MSI Afterburner and see if it still shuts down under load. That will give you an idea if a new PSU is the way to go.

Great great idea, I lowered the power limit and was able to load up the game and get into training with no problems, where as previously the game would crash the pc even idling on menu. So it's gotta be the psu. Next question is to figure out whether I need to go higher than 850W or if it was just this one was dead and going for another 850W would be fine

 

[mdd1963]

certainly '850 watts', should have been more than enough from a quality PSU....

It's possible the rapid current changes across the load associated with some GPUs, however, were/are highlighting that particular PSU's weakness.

NOTE: When/if you do change PSUs, do NOT mix/match modular cables between units, as often different PSUs use different connection pinouts at the PSU insertion end of the cables.

 

[Flayed]

Great great idea, I lowered the power limit and was able to load up the game and get into training with no problems, where as previously the game would crash the pc even idling on menu. So it's gotta be the psu. Next question is to figure out whether I need to go higher than 850W or if it was just this one was dead and going for another 850W would be fine

I would go for either a very high-quality 850W one or a 1KW good quality one just to be sure.