You can use xmr-stak-cpu (or xmr-stak and configure it only use CPU).
Run it in parallel with your GPU mining software.
Don't expect to earn a huge amount on one rig though
I have not seen any stability issues so far.
Run it in parallel with your GPU mining software.
Don't expect to earn a huge amount on one rig though
I have not seen any stability issues so far.
Same here. Using XMR Stak to CPU mine Electroneum alongside GPU mining w/ EWBF on 2 rigs. No stability issues between the two for several months now. Not making me rich, but otherwise those CPU would essentially doing nothing.