No, this cooler isn't compatible with your i5-9600K.
No, this cooler isn't compatible with your i5-9600K.
Could have chosen a more affordable option that isn't a K CPU since it seems you're definitely not seeing it
At this moment you might need to adjust things. Your current CPU has a 51 watts thermal design power, while the new one draws 95 watts. The cooler can't handle the extra heat from the newer model during intense tasks like gaming, so it will slow down to prevent overheating. The fan will spin loudly, possibly near full speed, working hard to move air through the tiny heatsink. In BIOS you may find settings to cap power usage, limiting how much the CPU can draw and thus keeping its speeds lower. If that's not an option, you could disable certain cores—like switching from 6 to 4—resulting in reduced performance but less heat. Either way, the system will remain stable enough for basic tasks like browsing or using Windows.