RAM compatibility between 2010 / 2011?

Question

Level 1

16 points

RAM compatibility between 2010 / 2011?

The 2010 MBP's use 1067 Mhz RAM, and the new 2011 models use 1333 Mhz RAM.

I currently have 8 GB of 1067 Mhz RAM in my 2010 MBP. I would like to know if the 1067 Mhz RAM can be run in the 2011 MBP and if the 1333 Mhz RAM can be run in the 2010 MBP so that I can keep my 8GB and put the 4GB 1333 in the 2010 model?

MacBook Pro, Logic Studio, iPhone, Mac OS X (10.6.4)

Posted on Feb 26, 2011 2:24 AM

Reply

Answer 1

djanthonyw Author

Level 1

16 points

Feb 26, 2011 1:41 PM in response to djanthonyw

Anyone know?

Reply

Answer 2

Feb 26, 2011 1:57 PM in response to djanthonyw

Most ram is backwards compatible, however this will clock the buss speed down to 1067. I believe this is what was used in the 2010 15" and 17" mbp's.

Reply

Answer 3

djanthonyw Author

Level 1

16 points

Feb 26, 2011 3:17 PM in response to pabowhunter59

So I can run the older RAM in the newer machine, but can I run the newer RAM in the older machine?

Reply

Answer 4

eww

Level 9

53,028 points

Feb 26, 2011 3:24 PM in response to djanthonyw

The faster RAM will probably run OK in the older machine, but the below-spec older RAM will slow the new machine down at best and may, under some circumstances, make it unstable or cause kernel panics. Don't use it. Buy RAM that meets the specifications for your machine.

Reply

Answer 5

djanthonyw Author

Level 1

16 points

Feb 27, 2011 4:39 AM in response to eww

Ok, after seeing this I'm uncertain again.

http://www.macmall.com/n/macNavLinks-305?q=8300859

Apple ships the new 2011 MBP's with 1333 Mhz RAM, but MacMall ships the new MBP's with 1066 Mhz RAM?

Reply

Answer 6

eww

Level 9

53,028 points

Feb 27, 2011 6:03 AM in response to djanthonyw

I suspect that's an error on MacMall's page.

Reply