I just built a new pc. When it comes to ram speed, they say you have to enable the xmp profile in bios to get your advertised speed. I did this and have checked that it does say the profile is enabled and shows 3333mhz. Both windows and cpuz say that the ram speed is 2400mhz. I have no idea why.
Ram: Kingston HyperX Predator 16GB Kit 3333MHz DDR4 CL16 DIMM XMP
Motherboard: Gigabyte Aorus z390 pro wifi
Cpu: Intel i7 8700k
Ram: Kingston HyperX Predator 16GB Kit 3333MHz DDR4 CL16 DIMM XMP
Motherboard: Gigabyte Aorus z390 pro wifi
Cpu: Intel i7 8700k