CPU cooler with advanced specifications and smaller distance requirements

Hi!
I want to know more about Noctua's NH-L9x65. What are the specifications? What are the system requirements for this cooler? What are the benefits of this cooler compared to other products? How much will it cost? What do you mean by SSO2 bearing? What is the essence of conceptualizing this to a cooler? What are ITX mainboards mean? What is the difference between PCI and PCIe? What are the cooling capabilities of this device? How does it performs? What is NT-H1 thermal compound?
