Last year when we first reviewed the Ryzen 7 1800X, we had a hard time trying to push the DDR4 to 3200. With the newer range of motherboards based on the X470 chipset, it seems that the problem is resolved.
With the old Ryzen 7 1800X processor installed onto the MSI X470 Gaming M7 AC motherboard, Gskill SniperX modules, we set it to run at XMP Profile #2 for DDR4-3400.
Nothing else is changed in the BIOS after loading setup defaults. Boom, and everything is working. The CPU is now able to support DDR4-3400 which was not possible 1 year ago.
Could it be the BIOS that wasn’t able to support it on X370 ? Is it a chipset limitation (which is unlikely). Or it is just the RAM that works or BIOS has solved some of the old bugs in previous ram compatibility issues?
Here is a screen shot of AMD Ryzen 7 1800X running cinebench 10 with RAM running at DDR4-3400 C16.