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April 15, 2013 1 min read

The DDR3-1066Mhz based iMac Intel Model ID 9,1 has 2 slots with a maximum of 8GB. These DDR3-1066 based iMac models are also known as the Early 2009 and the Mid 2009.

1066 vs. 1067? The correct name for this memory is DDR3-1066. But since it runs at 1066.66Mhz, the Apple System Profiler reports it as 1067Mhz.

Non-Stacked IC's: Ramjet uses a non-stacked module for the DDR3-1066 module for the iMac. The cheaper stacked IC variety of SO-DIMM draws more power, which increases heat and can cause increased errors. Ramjet ONLY uses premium non-stacked chips.