He also ran another demanding test called Y-cruncher. With the metal cover on, the processor's speed boosted to 5.90 GHz, used even more power (432 watts), and got up to 89°C. After removing the cover, it cooled down a bit to 82°C and used less power at 409 watts. It's important to note that when the metal cover was off, Pakhtunov applied a special liquid-metal thermal material directly on the processor, which helped with the cooling. This testing shows that removing the metal cover from the processor can help it run cooler and use less power during intense tasks, thanks to better heat transfer between the processor and the cooling system.