RAM Backwards Compatible. 2012 MBP to 2010 MBP

[HighTopFade]

I got a 16gb upgrade from Crucial for my 2012 MBP. It works fine. I was hoping the stock 8gb memory in my 2012 will work on a 2010 MBP. It fits, different speeds, but same voltage. Sadly, it doesn't work. Turns on, but doesn't leave the black screen. Am I missing something or it just won't work?

 

[chrisperro]

it just won't work with the same 2x 4gb 1600 but try one 4gb and one of the old ones.

 

[HighTopFade]

I haven't tried a new single or one new and one old yet.

 

[ianwuk]

I have a mid 2010 13-inch MBP, first time I upgraded the RAM the Apple store used 1333MHz and it failed to boot up. Long story short, if you want to upgrade the RAM in a 2010 MBP then you will always need 1067MHz only. Faster RAM (from newer Macbooks) are not compatible.

 

[HighTopFade]

Thanks. This blows.