crossfire, primary Gpu die in game problem

[themist0]

Hi, i have a very wired problem and I can not find any fix on google so I hope someone can help me here.

I just bought a RX 580 and I crossfire it with my old RX 480.

Everything works fine, did an hour of stress test and it got great benchmark from Haven and 3DMARK Time spy.

However, when I start up Skyrim, and opened up the map, the screen goes black and the system restart and only the secondary GPU's fan is sniping, and the device manager shows that I only have one GPU installed in the system.  I managed to get my new RX580 working again by unplug and re-plugin the power connector.

I went back to skyrim again and disabled crossfire in the Skyrim game profile in AMD setting.  But still every time I open up the map in game my new GPU dies. This never happens when I have only the RX 480 in my computer.

I tried to play Mass Effect Andromeda, And with crossfire enabled I only get 20 fps. And 30 FPS when I disable crossfire.

I did the stress test on my new RX 580 and it works fine.  And in Afterburner, I set both CPU's clock speed to 1340, Memory clock to 2050, and power limit to maximum. And it works fine in Time spy and Haven. 

 

My computer spec is:

cpu: i5 6500

Motherboard: Gigabyte Z170x-gaming 3

Ram: G.Skill 8gb DDR4 2400

GPU: RX 580/ RX 480 crossfire

PSU: Evga 750W

 

What caused this problem and how can I fix it?

[Dankk]

Don't crossfire two different GPUS.

[Dankk]

2 minutes ago, Dankk said:

Don't crossfire two different GPUS.

Remove the RX 480.

[Jurrunio]

Could be Skyrim not supporting Crossfire. Disable that and see if it works. If it doesnt then you can clean up the drivers with DDU, then reinstall it.

20 minutes ago, Dankk said:

Don't crossfire two different GPUS.

It's doable. They use the same cores and drivers do allow these two cards to go Crossfire

[Dankk]

Just now, Jurrunio said:

Could be Skyrim not supporting Crossfire. Disable that and see if it works.

It's doable. They use the same cores and drivers do allow these two cards to go Crossfire

Thank you for informing me of my mistake I have looked it up and you are correct.

[themist0]

2 hours ago, Jurrunio said:

Could be Skyrim not supporting Crossfire. Disable that and see if it works. If it doesnt then you can clean up the drivers with DDU, then reinstall it.

It's doable. They use the same cores and drivers do allow these two cards to go Crossfire

Thanks for your reply.  Sadly Clean up video driver with DDU and disable crossfire didn't work.  But I did fix the FPS issue for Mass Effect by disable Crossfire.

I tried 7 games and the only game that has the GPU crush problem is Skyrim when opening Map.  (did not have this problem when I use only the 480.  I did more research and some people say it may be the PSU problem.  But the PSU calculator says I only need 670W even after overclocking.  I downclocked my 580 and it did not fix it either. 

Any thought on what should I try next?

[themist0]

I'm feeling that crossfire 480 with 580 is complete waste of time since all the game I play doesn't support crossfire~