R9 390x Strix Crossfire

[Daniel_169]

I have 2 of these cards in crossfire. Both are detected. Crossfire is enabled. But the second card doesn't do anything and the fans don't turn and when i look in GPU-Z Its says cross fire enabled but there is no sensor data from the second card and if i change the fan speed it doesn't do anything. Any help would be great thanks.

 

[chris987]

mobo and psu you have. ?

 

[bigpinkdragon286]

During a full-screen game that has a CrossFire profile, or are you at the Windows desktop?

At the Windows Desktop, the default behavior of the 2nd card in CrossFire is to be turned off. You likely won't get readings from the card like that.

 

[Rogue Leader]

During a full-screen game that has a CrossFire profile, or are you at the Windows desktop?

At the Windows Desktop, the default behavior of the 2nd card in CrossFire is to be turned off. You likely won't get readings from the card like that.

I don't think thats true, while I am not 100% on the fans running on my second card while on the Windows desktop, (but they probably are) I definitely get temperature sensor data from the card.

OP can you first try putting the second card in by itself into the first card's slot to confirm the card is not outright defective.

Secondly yes we need to know your full system specs.

 

[bigpinkdragon286]

During a full-screen game that has a CrossFire profile, or are you at the Windows desktop?

At the Windows Desktop, the default behavior of the 2nd card in CrossFire is to be turned off. You likely won't get readings from the card like that.

I don't think thats true, while I am not 100% on the fans running on my second card while on the Windows desktop, (but they probably are) I definitely get temperature sensor data from the card.

I have noticed that sensor data comes and goes depending on driver release. It could be a limitation of older drivers that is no longer present, could be that the card has been activated (caused to be brought from it's ULPS) by software, or it could even mean that ULPS is not functioning in your situation.

Edit: Heck, this behavior could even be hardware dependent.