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Member Since: Feb 05, 2009
Location: Seattle
Posts: 51
oakie is on a distinguished road
Mac Specs: MBPro15 2.4/4/500 (Mid 09), MBAir13 2.13/4/256 (Late 10)

oakie is offline
Originally Posted by carneymac View Post
Your computer can only see 3g of Ram. The older intel macbook pro has a limit of 3GB that can be used (the older MBP came with the Intel 945PM chipset that has this limitation), however,the newer Santa Rosa based MBP can have 4GB.

The Santa Rosa came out in late 07 or early 08.
MB403LL/A macbooks support up to 4GB of RAM. nice try though.

it's because the Corsair units have an incorrect ICC profile loaded into them and are incompatible with the MacBooks. the SMC isnt able to identify them properly... but when you use the combination of the Corsair module with one of your stock modules, it works fine as the SMC relies on the ICC profile stored in the stock module to identify the modules loaded in the banks.

the lesson learned is to only buy RAM from shops that specialize in parts and support for Macs. try Other World Computing (, RAMJET Inc. - High Performance Mac Memory, or the *Apple* section on newegg. these suppliers test the modules for compliance prior to sale. their prices are also very competitive and they usually feature a lifetime guarantee.
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