PC turns off somewhat "demanding" games

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Yunimo

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Mar 29, 2015
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EVGA 650G PSU

As of recent I have been stuck with playing a select few games rather than what I would usually choose to play, due to my PC crashing on them. While playing the said games, my temps are fine and there are no stutters but my system will completely turn off at any random time.

There has been a few cases where the system will stay powered, but I will have no display (no signal). Or stay powered and just freeze. This leads me to think that it could be a GPU problem but I may be completely wrong, thus I am here seeking some help.

If you would like me to run any benchmarks or stress tests please let me know.
 
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Please provide your complete system specifications. Make sure your PSU is able to draw cooling air through it (i.e. the intake, if bottom-mounted, isn't muffled by carpet; its fan isn't struggling against too many exhaust fans in your case).
 
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PSU is completely fine in terms of being able to draw cool air.
What else would you like to know?
 
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Temps rarely change while under load; that screencap was taken while a game was open. Might be because the fans only really kick in when temps do rise
 
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I have a Hyper 212 Evo
 
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What are your components? For the shutdowns to occur only in demanding games suggests a power or thermal issue more than a software problem (which could happen at any time).
BTW, please be advised that image hosting sites are blocked at work. I see some references from others to an image, but I can't see it, so sorry if I've missed something obvious from the image.
 
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Have you tried reseating the gpu? They can work slightly loose over time, which causes occasional black screens (but normally only for a second or so). It can sometimes help to push/support the backside of the mobo tray while doing so. Another possibility could be corrupt gfx drivers (try completely wiping the nvidia drivers via custom install).
 
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Apologies, didn't take that into consideration.

Mobo: GIGABYTE 970A-UD3P
CPU: AMD 8350 4ghz
RAM: 16GB corsair vengeance pro
GPU: EVGA 980ti SC
PSU: EVGA 650W G1
 
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I've tried both and the problem still remains
 
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Looking at EVGA's page, your power supply has 4 rails that total 53A ? The breakdown per rail isn't listed. Newegg seems to suggest 20A per each , with max distributed = 53A. For stability purposes a single rail on the +12V with sufficient amperage would be preferred. The 980Ti is roughly a 38A/600W required card. You may also have to increase airflow and dedicate a fan specifically for the MB VRMs as the 8350 is a hungry processor and draws a lot of power.
 
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could you simplify that; it all makes no sense to me haha :')
I'll look into the fan situation when I'm back home.
 
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As your video card ramps up from increased demand, it will draw more power from the power supply. The 980Ti requires a power supply that roughly can deliver 38Amps on the +12 V .

The power supply you have can deliver 53Amps, but this is spread across 4 different rails (pathways) instead of a unified power rail. Spreading the power like that reduces the load any single line caries, thus less heat. However, in devices that can utilize large amounts of power, depending on power supply configuration/circuit sharing, you can exceed the amount that a specific rail can carry. Depending on how your 980Ti is configured at the hardare level, and how your power supply is configured internally, you may end up trying to draw more power than any single rail can actually deliver. It Appears that your PS +12V has 4 separate rails, each capable of 20A max, but in total only capable of 53Amps on the +12V rail(s).

20x4 is NOT = 53.

f you cannot deliver required power, this can trip the system off or the overvoltage protection off. A power supply with a single unified +12V rail is generally more robust, as it has to be able to deal with that current all on one rail without sag

Your CPU is a high power requirement item as well, and can crash without stable power being delivered to it. This can be affected by power delivery, or overheating VRMs (voltage regulating modules).
 
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Are you basically saying I should be looking into getting a new PSU?
 
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Your crashes occur at load, which I normally associate with power delivery, or overheating components. Will address both

You can try rearranging your VGA / CPU cables at the power supply hookups to see if you can get more stability by trying different rail combinations. A quality power supply with a single +12V rail doesn't have this issue. Split rail designs are beneficial in some cases, but for high power delivery applications, not ideal. If you cannot get stability with trying different combinations, then a different power supply may help, yes. The power supply is the true heart of the system.

Would recommend going 700 Watts, though 750 Watts seems to a more popular level with a lot more options. at that level, you should be able to get around 62 A on a single dedicated +12V rail design (not a split rail design). You know your pricing options better than I do however. Modular would be preferred of course for reducing cable clutter which leads to the 2nd point on system stability:

Airflow / cooling. How many fans do you have running ? Motherboardboard VRM / component heating may also be a source of instability. Increased airflow can help mitigate that somewhat. Make sure your cables are bundled and tucked out of the way to help promote smooth airflow (anything in the way creates turbulence which reduces smooth airflow) Adding more fans and/or a dedicated VRM fan may help. The CPU cooler really doesn't move all that much air around the VRMs, which tend to be clustered around the CPU socket.
 
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e8yMJjy.png


didnt crash at all
 
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