8400MHz pelo padrão JEDEC @1.1v, ou seja irão passar isso com o OC facilmente.Frequency / Transfer Rate.
Memory frequency refers to the number of commands or transfer operations that the memory module can handle per second. It is typically expressed in megahertz (MHz), but some manufacturers use express this in mega transfers per second (MT/s). The number follows the DDR version, so a DDR5-4800 DIMM, for example, has a frequency of 4800 MHz (or 4800 MT/s).
DDR4 frequency ranges from 1866 to 3200 MHz, while DDR5 ranges from 4800 to 6400 MHz initially, but may go as high as 8400 MHz.