Why "Delidding" & Direct Die Method on Intel Processors?
During delidding, or "heading", the processor's heat spreader is removed. For unsoldered processors, delidden is typically used to replace the thermal interface (TIM) between the CPU die and heatspreader with high quality thermal paste or liquid metal before the heatspreader is reassembled. However, since 13th Gen Intel Core processors are soldered, this is not an option as removing the indium solder would create too large a gap between the IHS and CPU dies.
Therefore, the 13th Gen Intel Core CPUs are primarily delidded for a possible installation of the CPU cooler directly on the CPU dies. Experience has shown that by leaving out the heatps reader and mounting the CPU cooler directly on the die, the temperatures can be reduced by 10-15 °C if liquid metal such as Conductonaut is used as a TIM. A corresponding test with an Intel Core i9-13900K was carried out by content creator and tech YouTuber Roman "der8auer" Hartung, professional overclocker and engineer.