Is the problem with GPU or PSU?

[ndhuyvu]

My setup:
PSU: FSP AU-650M (3-4 years of usage)
MB: Gigabyte Z97X-Gaming G1
CPU: Intel Core i7-4790K
RAM: 4 x 4GB Muskin

I have just bought an ASUS GTX 980Ti card (no OC version).

During my game (Total War Attila, max all setting), my PC occasionally stop running, force me to hard reset it. Sometime, when I watch movie file, the PC simply reset.

Each time I reset, the first time Windows always inform that the GPU have problem, and NVIDIA GeForce Experience refuse to run, but the monitor that connect to DVI port of the GPU still display normally.
Restart again and everything look fine, for a while.

I wonder if my PSU cannot handle the card, so I download 3dMark free version, and run Fire Strike. When the Combine Test is run, my UPS that my PC connect to sound warning until the test is over.

Is this really indicate that I need to get stronger PSU?
Please note that during my game session, my UPS just sound alarm twice, and the PC did not shutdown.

 

[jimmyEatWord]

it's your gpu , not psu

 

[ndhuyvu]

it's your gpu , not psu

Because...

 

[jimmyEatWord]

it's your gpu , not psu

Because...

Because i'm having the same gpu problem with black ops 3 , since modern warfare 2 i had to upgrade my gpu twice , but in black ops 3 if you cap your fps to under 100 you gonna have less crashes, but still issues prevail

 

[ndhuyvu]

What about the alarm from my UPS every time I run 3DMark?
I thought that might show some problem with the power?