My Corsair Vengeance lpx 2x8gb 3200mhz is showing up as 2133mhz in my bios and when I try to manually change it my system won’t post and I need to boot it with 1 ram stuck I have A ryzen 5 3600 and a rog b450 f mobo
Just what did you change in Bios?
To get 3200MHz you can't just key 3200 in the DRAM frequency field without the correct Primary Timings and DRAM Voltage. This information is available in CPUz or within Bios from the SPD section in the Tools menu.
There may be an XMP or D.O.C.P profile to suit your RAM however they are OC RAM so no guarantee . You may have to key in SPD values manually.