I have a mid 2010 a1278 macbook with 6gb of 1067mhz ram
I also have another laptop I don't use where I'm getting the ram from with 2x4gb of 1600mhz ram
What I did was try to mix it by putting the 4gb 1067 + 4gb 1600mhz ram and it won't boot to anything with continuous loud beeps.
So my laptop won't downgrade the clock speed. Is there a way I can manually downgrade the clock speed so I don't have to buy new ram sticks.
Possible issues: Can't boot from 8gb of ram, or can't boot using 2 1600mhz ram/mixed speeds