2x8 and 2x4 ram !!

stefanaras1111

Honorable
Aug 15, 2017
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Hello i have a 2x8 ddr4 kit 2400mhz and a 2x4 ddr4 kit 2666mhz of the same brand (crucial) and both cl16 will i be able to run them 2x8 2400mhz dual channel and second dual channel of 2x4 2400mhz? i guess the second kit will not run 2666mhz cause the other is 2400mhz
 
Solution
In theory yes, if you keep you them in matched memory slots, the 2666mhz should down clock to 2400mhz if manually set it in bios, will it be stable, who knows, not best to mix speeds these days.