New PowerColor R9 280X , PC started to shutdown under load.

[metalhusky]

Hi
i had a ASUS R9 270X 2GB card no crashes everything was fine.
I bought a PowerColor R9 280X and it has not 6 + 8 Pins like the R9 270X had, but 8 + 8, but anyway, i hooked it up to, turned it on, works fine.
Then i tried playing a few games, when i played Wircher 3 i think it was, the PC just shut down.
There was no BIOS error, BlueScreen or what ever, it just went off. I pushed the Power Button, PC didnt turn on, i flipped the switch of the PSU off and on after that i could normaly start the PC.
It happened now 5 days after the installation again, ingame..
So it seems like PSU cant keep up, is it a thing? Can it be? I heard that for a R9 280X you need at least 750W PSU, others say you need only 500-600 W, so what is it?
Do i have to buy a new PSU?
Can someone help?

Here is my sys specs.
CPU: AMD FX 8320 @ 4GH
CM Hyper EVO 212
GPU: PowerColor R9 280X
RAM: 8 GB RipjawsX 1600
Mother.: ASUS M597 R2.0
PSU: Aerocool E78-530W
also 3 HDD's and 1 DVD Drive.

 

[andy_Man]

Upgrade your power supply. Use the tier list.
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

 

[metalhusky]

Recommended Wattage for a R9 280x is 600W
This one schould work then, right?

http://www.amazon.de/quiet-Pure-Power-L8-CM-630W-Netzteil/dp/B005JRGVBQ/ref=sr_1_1?ie=UTF8&qid=1443717409&sr=8-1&keywords=psu

It is Blue in the tier list, which means it has a Silver rating.
I just want to be sure if i undestood everything right.

 

[andy_Man]

I would go with
http://www.amazon.de/dp/B00JNBGNGM/?tag=pcp05-21

A bit more headroom and tier 2 on the list.

 

[metalhusky]

OK, i'll buy this one then.
Thanks!