hi,

i just purchased a Dell 3650 Workstation with a i9 10900k processor, came with 16 GB of Ram. I wanted to Exchange these two Hynix Ram Bar with 4x 8GB Corsair Vengeance Pro with 2933Mhz DDR4 Ram, as said in the Dell instruction, it needs to be 2933Mhz. Not only can i only put in 3x8GB of the Corair and if i want to exchange the last one, the PC won't boot and shows the 3red and 5while blinik at the start button. If i replace it with the orginal Ram, it works. But in the CPU-Z the Corsair Ram is shown with 2600Mhz (which is wrong, it is a 2933Mhz block, and the original with 3200Mhz, which is weird, as Dell recommends 2933mHz.

I don't know where and how i do the mistake, i don' want to overlock or anything, i just tried to use 4x the same Ram to get 32GB finally.... why are these Mhz so different and not 2933Mhz?