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A matter of power?

nineite
  • 22 months ago

I've listed previously here about having some problems with my new-ish built rig. The short story is after maybe 30-60 minutes of hard work (Subnautica/Starcraft 2) I loose all output, & sound becomes a constant buzz. The only thing I can do is a hard reset, after which everything is fine..... unless i go right back into the games.

Build is here: https://ca.pcpartpicker.com/list/NhH79W

https://pcpartpicker.com/list/Nm6sxY

I was suspicious of my GPU. The only entries in my error logs are the improper shut down messages. No duh, I can't see anything, even the caps locks/num lock keys don't respond. It's locked up good!

My graphics card on this build is an RX 480. I've got Software 18.2.1 on it. I can confirm this never happened on the stock drivers that came on the disk. The upgrade happened after system & game suggestions.

GPU Z & the AMD System tool show the graphics card redlining. GPU Z in particular shows the temps climbing while the fans stutter step behind them. Ultimately it all crashes around 78C and the fans are never at more than 50% load. And even at max effort, they don't stay there for more than an interval. Bios shows CPU & Mobo temps are all fine and none of it is referenced in the logs.

So thus my suspicions. HOWEVER. One of my buddies pointed out that while it's warmish, 78 C is also not an unreasonable load for a card working on a game.

The next suggestion is overall power draw. On my last rig I had a 1k power supply just... well just because. I knew I didn't need it. This time around, in an effort to conserve some money and more closely tailor the hardware, I'm running with a 550 watt unit. According to all the calculators I can get my hands on. I should have overhead to spare.

The calc on this site doesn't show that I put an extra spinning HD in the case later, so there is some extra draw there. However, even on other calculators (https://outervision.com/power-supply-calculator) when I include it, I should still have almost 100 watts to spare. The largest suggestion I've found says I want 477, and I'm running 550.

So, do you guys think I've got a bad card, or maybe not enough juice? I can replace either part but I'm not sure I can do both at once. Or maybe a bad driver? Though this is a non-expirmental driver straight from the AMD support page, so I should think it would be fine. This is the first time I actually wish for BSODs just so I would at least have logs to go by.

Comments

  • 22 months ago
  • 1 point

As you say was wattage should not be a problem. Even with fans and overclock you should be good and most calculators tend to overestimate for safety. The psu you got has a good rep but possible you got a bad one. Could be the gpu as wel. The temps don't sound super high. Really i don't know the prob:/ I'd try updating,refreshing,defalting to factory and reinstalling drivers first and double check all your connections in the tower. After that you need a better tech then me. GL

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