PSU causing PC freezing?

[olvr]

Hi,
my system is:
CPU - FX 6300
GPU - GAINWARD GTX 1060
MB - MSI 970A - G46
MEM - 4GB Zeppelin 1600
PSU - Fortron/FSP Hyper S 500W

After upgrading to new gtx 1060 I had been experiencing PC freezing during gaming. Sometimes it freezes after 5 min, sometimes it takes longer but it will freeze

I watched temperatures and they looked ok - CPU around 50 - 55C. I didn't do any OC so I don't think temperatures could be the issue and I'm suspecting PSU. I upgraded from msi r9 270 and it worked ok with that gpu.
500W should be enough for this build so maybe the quality is bad? I was looking at Seasonic S12II-520 but is the difference except wats so big?

Thanks in advance

 

[Zerk2012]

The new video card uses 30 less watts than your old card.

 

[olvr]

Yes, I know, but still the symptoms look like it's PSU. Can it be that 1060 can draw under load more power maybe just for short time and system then exceeds PSU limits?