CAS mix question

Discussion in 'PC Hardware' started by potjevleesch, Jan 12, 2016.

  1. potjevleesch

    potjevleesch MDL Addicted

    Aug 7, 2010
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    can I mix 2 sticks of ddr3 dual channel CAS 9 with 2sticks CAS 10 on Intel P67 mobo ?
    thx
     
  2. Mutagen

    Mutagen MDL Addicted

    Feb 18, 2013
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    Three possibilities (I think):

    1 - It works, but MB will adjust itself to accommodate the slower CAS 10.

    2 - It won't work, but the BIOS will tell that at power on.

    3 - It appears to work, but when you check the Properties on My Computer, only half the memory appears.
     
  3. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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    There's a 4th. It might not work at all, in which case you'll get boot failure.

    Best bet is to check the manual and see if the DRAM controller will handle the different speeds gracefully.
     
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  4. Mutagen

    Mutagen MDL Addicted

    Feb 18, 2013
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    Yeah, I forgot the audio option: BEEP-BEEP-BEEP-BEEP-BEEP-BEEP-BEEP-BEEP-BEEP
     
  5. potjevleesch

    potjevleesch MDL Addicted

    Aug 7, 2010
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    thank you all, makes me cautious... I mixed frequencies before, but with the same CAS, it worked
     
  6. bpwnes

    bpwnes MDL Member

    Aug 11, 2015
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    I think newer motherboards care less about CAS mixing. I haven't really had any issues I can think of when it comes to mixing RAM. I say go for it. Only one way to find out whether it works or not.

    I have a P6T (1366) with 4 different brands and sizes of RAM in it. Never had a problem running 11GB. I've used it for data recovery for years. Recently replaced it with an AMD Gigabyte board because it has USB 3.0.