Is it safe to mine Malairte 24/7 on my gaming PC?

Yes, with reasonable precautions. Modern CPUs and GPUs are designed to run at full load for extended periods, and Malairte mining is not categorically harder on hardware than a long gaming session or video render. What changes under 24/7 use is wear-and-tear pace: fan bearings, thermal paste, and thermal pads age faster. To keep a gaming PC happy while mining, set a sensible power limit on your GPU (around 70 to 80 percent of stock), use a fan curve that ramps slowly rather than spiking, repaste the CPU every 12 to 18 months, and blow dust out monthly. Avoid running your CPU and GPU at their thermal limits constantly; aim for sustained GPU temperatures under 75C and CPU temperatures under 80C. Your hardware will last comfortably for years.