Hi community,
I recently decided to upgrade my PC to crossfire, with 2 x Sapphire R9 390X Nitro cards. But the slave card in slot 2 will not show any sign of fans on the crimson software, or in my corsair link. They're just not there, and aren't working at idle or load. My power supply is a 1000w Corsair platinum HX1000i, and my motherboard is the Asus Maximus VI Extreme. Sometimes the fans will show up after a system reboot, but I have rebooted twice this time round and they still aren't there. Is this a graphics card issue, or something else. Please help
This is expected behaviour. GPU2 is sleeping, literally. This video will explain Zerocore/ULPS technology.
AMD ZeroCore Power: How to Make my PC More Energy Efficient - YouTube
AMD's ZeroCore Power Technology Explained - YouTube
Note! Whilst ULPS is enabled GPU monitoring, such as fan speed, usage etc via third party tools may be unavailable. To workaround this you would need to disable Zerocore/ULPS using third party tools.