I have been adding R9 380s to my PC when i could afford one and have recently bought a third. However I cant get it to work for love nor money. The machine recognizes all 3 and so does catalyst, however the option to enable all 3 is not there.
Benchmarks only use 2, Games only use 2. I cant get my head around it.
One person suggested they are only dual card capable but i have evidence to the contrary.
One person suggested the CPU wouldn't let it work.
MSI R9 380 4G Gaming x 3
Win 7 64 (also tried win 10)
Optoma HD131xe 1920x1080@60Hz
Crosshair V formula
FX 4300 @ 4.9Ghz
16gb 4 x 4gb