RX580 with GTX980??

[hksr]

Can I run both on a Maximus Vii Hero motherboard?  I already have the GTX 980, but want to add more hashing power to my computer.

[0xcosmos]

you can definitely
they will just use different drivers
make sure you are on the latest drivers for both
if you have some problems running miner
run them in two different batch files and you will be okay