Upgrade vga card for macpro 2009

[thgtrg]

hi guys,

i have a macpro 2009 had flashed firmware 4.1 to 5.1 and installed high sierra os, currently, i bought biostar rx560 4g (https://www.biostar.com.tw/app/en/vga/introduction.php?S_ID=239) i had installed into my macpro but when i run macpro after 20-30 minutes macpro was auto restart or appear grey screen i must be restart macpro manual. i tried to install new mac os but it's still happening this error

please give me advise to resolve this error, many thanks

 

[owbp]

You gotta tell us more.
Run Ethrecheck and upload result here or see what the Console says about that error/panic.

 

[thgtrg]

You gotta tell us more.
Run Ethrecheck and upload result here or see what the Console says about that error/panic.

Thanks so much, i had used Ethrecheck and detected that firefox is the cause of this error