b550 phantom gaming 4

Hello, I have an ASRock B550 Phantom Gaming 4 (here's the manual for reference) with Ryzen 7 5800x and RTX 3070. After reading the mobo manual again I realized that there is the PCIE1 slot that's stated to be PCIe 4.0 x16 to be used "for PCI Express x16 lane width graphics cards" but this whole...

I recently built my first pc and I'm having some trouble changing the clock speed for the ram. I enable XMP 2.0 profile and when I switch to 3600mhz it only shows up 2100mhz on task manager. The highest ram speed I could get is 3000mhz at 1.35 voltage. My ram is put in slots A1,B1...