Rx 470 crashing

[Shousha]

So i bought a used rx 470/ pc a month ago and it worked really really well untill today it crashes within a few minutes from playing any game the temperature is usually around 70-82 while gaming and 48 on desktop, cpu's temp goes from 70 to 80 on games.

Update 1 : so i figured out it's not the temperature by keeping the gpu below 60° , games works fine on low - medium settings but if i go medium or higher in certain games it will crash eventually.

 

specs 

cpu: i5 2400 3.1

mdb: DQ67SW

ram: 2x4 1600 Mhz

gpu: rx 470 sapphire nitro 4gb

psu: 500w

 

hope someone can help me solve or determine which part is corrupt

 

[ItsGillani]

Bro did you find the solution to your problem?