Different Ram Speeds

brad robinson · Feb 17, 2015

Hi

I now know from reading all forums and comments that i should not have done this but i need help...

I have 4 ram cards at 4gb each. 2 are 800hz and 2 are 2133mhz. I cant seem to get all four to run but i can run 2 800hz and 1 2133mhz ram and not sure why?

I'm wondering if there is something in the bios i can change etc?

The motherboard i have is gigabyte b75m-d3h ivy bridge and has the intel 3770k CPU.

Could someone please help if this is possible or not?

Thanks

Entomber · Feb 17, 2015

you cannot run multiple RAM sticks at different speeds in the same system. They will all run at the slowest available speed.

brad robinson · Feb 17, 2015

Entomber :

Thanks for your reply. I understand they will run at the slowest but why don't they run at all?

Entomber · Feb 17, 2015

different RAM sticks are not always compatible with one another, if your computer fails to boot with mixed RAM sticks, then the sticks are not compatible and will not boot together.

brad robinson · Feb 17, 2015

Entomber :

Okay, this may be the reason for this and no setting in the bios can fix this. Thanks for your help.

Tradesman1 · Feb 17, 2015

Try manually at 1333 9-9-9-24 1.5

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Different Ram Speeds

brad robinson

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