I hear that the new i9-9900k cpu uses solder instead of the thermal paste I am familiar with. What type of soldering iron do I need for the i9-9900k? I have tried looking and cannot find any videos online for the installation of one of these. Do I need a certain wattage / temperature or do I need some other tool?
Only if you had plans to de-lid the CPU to get lower temps using liquid metal would you need a soldering iron. Which I am guessing your not. So all you need is thermal paste and a heat sink as usual just like kanewolf was stating.