PC getting shut down because of too high power consumption?

[laklek]

PC Build: https://pcpartpicker.com/list/FT4RM8
With the PSU: Sharkoon WPM500 V2 (not V1 as in the link) 500W ATX

Dear,

So for some reason my pc started to shut down in some games, after some diagnosing with some stress testing software it appeared to be something with my GPU and PSU. I'm not overclocking anything. If I run FurMark for a short time on 80-100% TDP Power it crashes after a few seconds, 70% appeared to run fine, but today it couldn't even handle 70% for 2 minutes, so now I've put it on 60% and it hasn't crashed for 6 minutes now. Tho for some reason it's still using 66% of the power says MSI, but that's another problem for later.

Do you think my problem is connected with the low wattage of my PSU, or is my PSU broken? (cause it did run fine). Also what do you think my best solution will be for the time being if I still want to play GPU intensive games? I guess I'll get a new PSU later on but do you think I should keep decreasing my GPU max TDP? (or maybe my GPU couldn't handle 70% in the first place but I didn't test for long enough)

Thanks and best regards,
Lesley

PS: Current MSI settings:

 

[superninja12]

theres a difference in quality with powersupplies there are 30 dollar 500w psus and 100 dollar 500w psus.
sharkoon simply cant deliver a stable voltage for the high load, this isnt exactly good for your components.

your psu is just very poor quality, you need to get another one.

 

[rhysiam]

It is very likely a PSU related issue. If you have a look at the PSU tier list you'll find Sharkoon listed under tier 5 as a manufacturer that you should not ever use under any circumstances: http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

While in theory your unit is rated for 460W+ continuous on the 12V rail, which should be fine, it's a super-dubious brand and it's very likely that it's no longer able to manage your gaming load.

I would not be switching your computer on again until you've got a replacement PSU. The issue with poor quality PSU is that's on top of just not working, they can also be providing the computer with really poor quality power which can reduce the life or even quickly damage all the components in your system. This is particularly true when a unit gets stretched/pushed hard. Good quality units have well designed safety circuitry built in that will power down the PC before they get pushed to a point that they start to provide dirty (and potentially damaging) power. You running extended stress tests right around the limit of that cheap PSU you have is a really bad idea. Maybe (hopefully!) it's shutting itself down before things get too bad, but with a cheap unit like you're taking a massive risk.

If you're in the US you can get a older design (but rock solid reliable) Seasonic unit for $45 + shipping (including a small rebate): https://pcpartpicker.com/product/fZyFf7/seasonic-power-supply-s12ii520bronze
Grab that and 90% chance that all your problems go away.

 

[laklek]

Thank you for your answers,
I've contacted both Sharkoon and the seller.
Sharkoon says it might be my motherboard too, which might be true, but again their response is biased.
I will let the seller test both my motherboard and PSU.