if your gpu mining rig needs constant restarting, its got an issue somewhere that you need to figure out. a stable gpu mining rig can run 720+ hrs or more before it needs to be restarted, ive got 4 rigs all that run well over 800+hrs most of the time before they get restarted due to updates to windows or me updating the mining software, other than that I hardly ever touch them. 95% of the time they will restart on there own, boot, login and run the software without having me intervene at all