1333Mhz ram in 1066 MacBook Pro

I have a MacBook pro (specs below) which specifies DDR3-1066 memory. I ordered an upgrade kit from Ramjet to go from 2GB to 8GB. Installed two 4GB modules and everything seems to be fine. However, after checking "About This Mac" I find that the installed ram is 1333, not 1066. They apparently shipped the wrong thing.

As I said, everything seems fine, despite warnings I've seen here. Has anyone had long-term experience with 1333 ram in a machine with a 1066 bus? Should I cross my fingers and keep going or return them and get 1066 modules?

Model Identifier: MacBookPro5,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.4 GHz

Number of Processors: 1

Total Number of Cores: 2

L2 Cache: 3 MB

Memory: 8 GB

Bus Speed: 1.07 GHz

Boot ROM Version: MBP51.007E.B05

SMC Version (system): 1.41f2

MacBook Pro, Mac OS X (10.6.8)

Posted on Sep 18, 2011 8:24 AM

19 replies

Sep 4, 2012 8:54 PM in response to Rick Feldkamp

This is late. I replaced my 2gb 1066 rams with 4gb 1333 ram in late 2008 mabcook unibody. It works just fine.

ps: the 4gb 1333 is removed from MBP early 2011, it is Sumsung.

Sep 17, 2012 5:56 AM in response to Rick Feldkamp

I put the 1333 in a year ago. Works fine.

exergy2

Level 1

0 points

Feb 23, 2013 4:49 PM in response to Daigorochan

Daigorochan, I'll be interested to see if you can run google earth with your overclocked ram (please see my post below).

Dec 31, 2015 7:16 PM in response to kreshiel

Stick with what your mac runs. just move the GB up. so if you had 2gb 1066mhz than move up to 8gb 1066mhz. why would you mess with 1333mhz.

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1333Mhz ram in 1066 MacBook Pro