Early 2011 1333 DDR3 interchangeable with 2009 1067 DDR3?

[zwodubber]

Hello,

I replaced my early 2011's 4GB of RAM with 8GB, question is since a newly acquired 2009 only has 2GB of RAM can I put in the 4GB from the 2011?

Thanks!

 

[thundersteele]

No.

You can try, since it's both DDR3, but most likely the old MBP won't work with the 1333 MHZ ram bars.

 

[EtherealMAC]

If you try it, lemme know how it works out, as I am in a similar situation.

 

[macfan74318]

Yes

I think that it will down clock the RAM, it down clocked the RAM in my 2011 whe I put a lower spec RAM in. If it doesn't work it should not damage the computer it just won't boot until you replace it with the correct one(if it doesn't work).

Hope this helps,
Macfan

 

[zwodubber]

edit: see post 7

 

[Naimfan]

I've done this several times. Only once did it not work - the 1333 MHz RAM caused one machine to kernel panic. Worked perfectly in the machine it came out of.

Try it - nothing to lose!

 

[zwodubber]

Thanks everyone, I'm upgrading the HDD so I'll add the RAM as well if I can find it...

 

[ZZ Bottom]

Thanks everyone, I'm upgrading the HDD so I'll add the RAM as well if I can find it...

The bright green things in center of the picture.

 

[zwodubber]

The bright green things in center of the picture.

LOL thanks, I meant if I could find the old ram from my 2011 in the closet full of parts

 

[zwodubber]

Everything works fine 😀

 

[logicpro7]

What memory did you fit?

I just bought 2 x 4GB Crucial 1333mhz for my late 2009 MBP 13" and it wouldn't work. It only worked if i put one 1066mhz and one 1333mhz stick in.

 

[zwodubber]

What memory did you fit?

I just bought 2 x 4GB Crucial 1333mhz for my late 2009 MBP 13" and it wouldn't work. It only worked if i put one 1066mhz and one 1333mhz stick in.

I used the 2 x 2GB factory RAM from my 2011 MBP. Apple does use different manufacturers so not all MBP's get the same brand. Guess I got lucky.