computer shutsdown while gaming

[austinlg]

I have been experiencing crashes while I'm gaming and I'm not sure why. I've done some tests and I think it might be the PSU. I was hoping to get a second opinion on the matter

 

4770k @ 4Ghz

Corsair h100i cooler

R9 390 (stock)

Corsair RM 650W

8GB DDR3 RAM @ 1600mhz

 

I'm running eyefinity 3 X 1080p

 

Is this simply a lack of power? I know they recommend 750W but I've been hearing that 650 would work and power calculators say that I nee 550W, so I was hesitant to think so, but I'm not sure what else it could be. I was able to reproduce a crash using furmark when it crashed the GPU Temp was 77 C. Fan speed 57%. So I don't think it's the graphics card. 

 

I first noticed this with the arkham knight. Which I wrote off to being the arkham knight. But I just bought Rise of the tomb raider today and I'm still experiencing it.

 

Please ... help.

 

[ttam]

What about your CPU temp? Cpu overheating is more likely to shut down the system

[Aniallation]

*cough*RM*ahem*

 

What are your CPU temps?

[Badazzz]

Most likely your CPU temps, but yeah it could be your PSU. Monitor it in AIDA64 or something.

[austinlg]

under 50 C. I was using furmark gpu xtreme burn-in. It wasn't testing the CPU.

[Benji_w]

under 50 C. I was using furmark gpu xtreme burn-in. It wasn't testing the CPU.

 

Before you run to the nearest store to buy a replacement anything, you need to stress test your system to see what is going on.

[Praesi]

The PSU is good enough. What does the event Manager say?

[Guest]

I'd guess bad PSU. 

[austinlg]

I'm not sure what you want from the event log. All I found when I looked was errors saying the PC had shut down.
 
I reran prime 95 just now and stopped it when my CPU temp went to 100 C suddenly. Not sure how that happened as I've pulled back my OC. to 4Ghz and I have h100i cooling.

 

Still though, I'm not sure that's it as i have reproduced a crash with Furmark when my CPU temp was 50 C and I'm only experiencing this during gaming.