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Mixing RAM with different CL and it doesn't work

Hello, I've read a lot of posts about mixing 2 RAM sticks with the same frequency (DDR3 1600 MHz) but different CLs. One is CL11 and the other CL10. When I start my pc up and go into BIOS it doesn't even recognize there's another RAM stick in there.

-1st stick (original I got when buying the computer) - Crucial CT102464BA160B 8GB DDR3 1600 MHz CL11
-2nd stick - Kingston HyperX Fury 8 GB DDR3 1600 MHz CL10

Any help is appreciated, I'm clueless. Thanks in advance :D

P.S. the new one works separately if it helps in any way.
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  1. Best answer
    Sometimes RAM modules don't mix well. If you could manually configure the settings for the crucial stick of ram to match the Kingston, you might have a better chance of working, but sometimes when you mix different ram, it simply doesn't work.
  2. Slumy__57 said:
    Sometimes RAM modules don't mix well. If you could manually configure the settings for the crucial stick of ram to match the Kingston, you might have a better chance of working, but sometimes when you mix different ram, it simply doesn't work.


    I actually just managed to match Kingston with crucial, read it's safer to match it on a higher CL value (in this case, 11), but now they're working on 800 MHz, if CPU-z is to be trusted. Idk if that's normal or if they should work on 1600?
  3. CPU-Z will show the ram as running at half what the rated number is, because it's DDR(double data rate)3. So if it's reading at 800, you're good to go.
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